4.12.2
======
- Feature: Support for RandR's "primary monitor"
- Translation updates: Arabic, Asturian, Basque, Bengali, Bulgarian, Catalan, Chinese (China), Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish, Dutch (Flemish), English (Australia), English (Great Britain), Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kazakh, Korean, Lithuanian, Malay, Norwegian Bokmål, Norwegian Nynorsk, Occitan, Panjabi, Polish, Portuguese, Portuguese (Brazilian), Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Telugu, Thai, Turkish, Ukrainian, Uyghur, Vietnamese

4.12.1
======
- Long overdue maintenance release.
- Translation updates.
- Clock: fixed compiler warnings.
- Preferences: support for xfpanel-switch (if installed).
- DirectoryMenu: fixed bugs #10331 and #11742
- Tasklist: fixed background color issue.
- ApplicationsMenu: fixed uninitialized variable.
- make distcheck fix/workaround.

4.12.0
======
- Actions: Use localization for confirmation dialog titles (bug #11949)
  (Ramon Dantas).
- Use actual output geometry to place panels (bug #11058) (John Lindgren).
- Tasklist: Fix grouped icons sometimes are wrongly rendered as a mini-icon
  (bug #10846) (Mauro Giubileo).
- Actions: Use common icon names (bug #11513).
- Pager & tasklist: Disabled wrapping when scrolling (bug #6401).
- Clock: Prevent recursion of symlinks.
- Make panel hide intelligently with shaded windows (bug #11371).
- Translation updates: he, es, sl, nb, ast, ru, pl, bg, fr, ro

4.11.2
======
- Added intelligent panel hiding (JPohlmann, ochosi)
- Action buttons: only save session when requested (bug #7930)
- Translation updates: fi, fr, ko, de, pl, cs, es, hr, ms, nl, pt_BR,
  ja, uk, sr, it, th, is, da, pt, en_AU, kk, ru, zh, CN, ast, tr, sk,
  he, ar, el.

4.11.1
======
- Action Buttons: Fix panel autohide (bug #8960) (Petr Gajdůšek).
- Application sMenu: fixed incorrect initial icon size in some Gtk themes.
- Window Buttons: fixed rendering of minimized window buttons.
- Applications Menu: changed default button title to "Applications".
- Window Buttons: wrap windows when scrolling through window list
  (Andre Miranda).
- libxfce4panel: preserve ArrowButton relief during blinking.
- Window Buttons: prevent several buttons to be selected at once.
- Action Buttons: default to a horizontal button layout in the deskbar mode.
- Translation updates: ja, sv, hr, es, de, vi, ast, nb, it, bg, fr, nl, uk,
  zh_CN, kk, pl, zh_TW, ru, is, nb, id, th, pt, he, en_AU, pt_BR, sr, ms

4.11.0
======
- Window Buttons: Improve the tasklist multimonitor handling.
- Scroll the items list in the config dialog box (bug #10582)
- Set EWMH client type to WNCK_CLIENT_TYPE_PAGER (bug #10508).
- Fixed transparency issues with Gtk3 plugins.
- Workspace Switcher: fixed aspect ratio in deskbar mode.
- Added --enable-gtk3 configure flag. Note: it produces gtk2/gtk3 versions
  of libxfce4panel and wrapper binary so that both gtk2 and gtk3 plugins can
  be embedded. The panel and stock plugins are still using gtk2.
- Applications Menu: Use new GarconGtkMenu.
- Window Buttons: middle-click action configurable (nothing, close, minimize).
- Drectory Menu: Pass path to argument (bug #10270).
- Window Buttons: close a window on middle click (bug #8096).
- Applications Menu: support for non-square icons and layout fixes.
- Install XfcePanelPlugin properties at once.
- Clock: added support for timezone selection.
- Put each window in a new window group.
- Window Buttons: Show urgent windows from other workspaces (bug #5167).
- Clock: calendar popup.

4.10.1
======
- Bugfix in icon/pixbuf resizing code.
- Fix icons not probably resizing when requested.
- Autotools updates.
- Ignore GVarueArray compiler warning.
- Use G_ENABLE_DEBUG to set fatal messages.
- Fixed DnD markers with non-square small items.
- Actions: Fix logic of session saving (bug #8857).
- Panel: Emit save signal for plugins.
- Libxfce4-panel: Fix typo in the API docs.
- Translation updates: Arabic, Bulgarian, German, Croatian, Polish,
  Serbian, Swedish, Turkish, Uyghur.

4.10.0
======
- Use correct LGPL licenses in the libs.
- Restore child properties when moving a plugin.
- Migrate: Use correct pointer for action migrate (bug #8781).
- Migrate: Don't try to migrate already migrated plugin (bug #8778).
- Translation updates: German, English (United Kingdom), Spanish
  (Castilian), French, Galician, Hungarian, Japanese, Korean, Dutch
  (Flemish), Polish, Portuguese, Portuguese (Brazilian), Romanian,
  Chinese (China).

4.9.2
=====
- Launcher: Fix desktop file monitoring on some systems.
- Panel: Improved DnD markers.
- Panel: Fix invalid autohide with socket dialog (bug #8617).
- Panel: Remove duplicated function.
- Panel: Remove duplicated function.
- Actions: Show translated strings (bug #8660).
- Check for sed using a macro.
- Actions: Fix mnemonics conflict (bug #8657).
- Clock: Fix compiler warning (bug #8648).
- Bump version-info of libxfce4panel.
- Translation updates: Arabic, Catalan (Valencian), Czech, Danish,
  German, Greek, Esperanto, Spanish (Castilian), Estonian, Basque,
  Persian, Finnish, French, Galician, Hebrew, Croatian, Hungarian,
  Indonesian, Italian, Japanese, Kazakh, Korean, Lithuanian, Dutch
  (Flemish), Norwegian Nynorsk, Polish, Portuguese, Portuguese
  (Brazilian), Russian, Slovak, Telugu, Turkish, Ukrainian, Chinese
  (China), Chinese (Taiwan).

4.9.1
=====
- Panel: Don't destroy window when focussed and Alt+F4 is
  pressed (bug #7378).
- Panel: Use new help function to redirect to docs.xfce.org.
- Docs: Remove mallard documentation.
- Docs: Don't install the gtkrc README.
- Clock: Don't use sigval_t (bug #8297).
- Panel: Add support for pluggable dialogs.
- Panel: Save changed plugin ids if a plugin failed to load.
- Directorymenu: Fix prefered app not working without snotify (bug #8298).
- Launcher: Small=FALSE in deskbar mode with label visible.
- Actions: Limit size of action buttons to row size.
- Panel: Removed item size checks.
- Clock: Fixing clock orientation in vertical/deskbar mode.
- Pager: Fixing infinite loopin in the WNCK pager aspect ratio workaround.
- Pager: Fixing plugin->size updates.
- Pager: Fixed workspace ordering in the vertical mode.
- Pager: Workaround for aspect ratio error in WNCK pager in deskbar mode.
- Pager: Changing orientation depending on the panel mode.
- Clock: Changing default value of rotate-vertically to TRUE.
- Pager: Fixed preprocessor macro.
- Pager: Removing broken workaround for aspect ratio in deskbar mode.
- Pager: Making use of a fixed libwnck version (>=2.31.0).
- Revert "Use realtime POSIX timers for the clock."
- Revert "Clock: Don't use sigval_t (bug #8297)."
- Launcher: Show the desktop file in the tooltip (bug #8536).
- Panel: Make string in about translatable (bug #8545).
- Panel: Don't ask for panel when inserting items (bug #8544).
- Panel: Reply to the caller for plugin events (bug #7365).
- Applicationsmenu: Fall-back to xfdesktop for
  xfce4-popup-applicationsmenu (bug #7365).
- Applicationsmenu: Recurse application menu selection-done gignal (bug #8541).
- Panel: Add (un)lock option to panel menu (bug #6980).
- Panel: Add confirmation before creating launchers from dnd (bug #6926).
- Applicationsmenu: Allow non-squared icons in applications button (bug #7381).
- Panel: Save plugin-ids when removing and moving items in ed.
- Tasklist: Bringing back 4.8 max-button-size property.
- Tasklist: Capping buttons height when button labels are visible.
- Tasklist: Reverting "ceil" to "floor" (as in 4.8).
- Actions: Query visibility and save as strings.
- Translation updates: Arabic, Catalan (Valencian), Czech, Danish,
  German, Esperanto, Spanish (Castilian), Basque, Finnish, French,
  Hebrew, Hungarian, Indonesian, Italian, Kazakh, Korean, Lithuanian,
  Dutch (Flemish), Norwegian Nynorsk, Polish, Portuguese, Portuguese
  (Brazilian), Russian, Slovak, Telugu, Turkish, Ukrainian, Chinese
  (China), Chinese (Taiwan).

4.9.0
=====
- Panel: Add option in preferences dialog to disable struts (bug #7202).
- Showdesktop: Allow middle-click to shade windows (bug #7177).
- Panel: Add style property to control size of autohide window.
- Panel: Make compositing settings insensitive (bug #7862).
- Tasklist: Add option to disable mouse scrolling (bug #6996).
- Tasklist: Make the plugin shrink instead of expand (bug #7389, #7129).
- Drop AC_PROG_LIBTOOL and AC_DISABLE_STATIC for LT_PREREQ and LT_INIT.
- Clock: Use realtime POSIX timers for the clock.
- Actions: Merge functionality of xfce4-session plugin.
- Applicationmenu: Show menu on button-press-event (bug #8047).
- Migrate: Add version based config migration.
- Clock: Fix typo in tooltip (bug #8137).
- General: Add deskbar mode and nrows property to plugins.
- General: Add small property for plugins.
- Separator: Remove new line option.
- General: Make plugins work with deskbar mode and small property.
- Panel: Change drop highlighting to a red line.
- Applicationmenu: Reload menu on directory changes.
- Panel: Make sure the panel has a position on startup (bug #8287).
- Panel: Work with a unique id for each panel.
- Panel: Remove autosaving on exit and with timeout.
- Panel: Only save what is required and when needed.
- Docs: Update to latest version.

4.8.6
=====
- Panel: Wait until the wm is ready on all screens (bug #7161).
- Systray: Control the thinkness of the frame (bug #7593).
- Launcher: Fix broken compilation (bug #7966).
- Launcher: Don't reconstruct the items on save (bug #7952).
- Applicationsmenu: Fix segfault with not-existing menu (bug #7895).
- Libxfce4panel: Avoid problem if panel is not yet realized.
- Panel: Print string in case of an invalid position.
- Libxfce4panel: Always try to return an icon.
- Directorymenu: Also send the target directory as arg (bug #7745).
- Translation updates (it, tr, nl, sk, pt_BR, te, zh_CN, pt, ru, ko,
  ja, ro, fr, kk, ms, es, id, eu).

4.8.5
=====
- Tasklist: Avoid unneeded dnd actions.
- Launcher: Fix plugin size with arrow button (bug #7747).
- Tasklist: Allow both motion activation and dnd (bug #7755).
- Panel: Fix off-by-one error in strut sizes (bug #7739).
- Tasklist: Fix assert in button dnd (bug #7741).
- Panel: Make preferences dialog work in Gtk+ 2.24.5.
- Systray: Add xfpm to known apps for a decent icon.
- Tasklist: Drop Gtk 2.22 API.
- Migrate: Fix 4.6 transparency migration (bug #7523).
- Translation updates (nl, zh_CN, de, pt, ja).

4.8.4
=====
- Systray: Fix disappearing icons when drawing at 0,0 (bug #7057).
- Panel: Fix panel loading in kiosk mode.
- Common: Update online documentation help location.
- Launcher: Fix spacing in vertical panel with arrow on the side (bug #7584).
- Panel: Set window colormap and change autohide window type (bug #7435).
- Migrate: Fix 4.6 migration of action buttons (bug #7543).
- Libxfce4panel: Fix menu positioning for moved external plugins (bug #7529).
- Panel: Improve thread-safety.
- Libxfce4panel: Idle XfcePanelImage loading.
- Pager: Make the pager message less scary.
- Windowmenu: Do not update if screen is not initilized (bug #7728).
- Libxfce4panel: Keep blinking forever (bug #7583).
- Tasklist: Fix minimizing of active transient windows (bug #7674).
- Tasklist: Add a sorting mode for tasklist reordering with dnd (bug #7058).
- Translation updates (fi, sk, pt_BR, eu, nl).

4.8.3
=====
- Tasklist: Work around segfaulting of group buttons.
- Tasklist: Properly initialize the monitor geometry on startup (bug #7340).
- Use portable abicheck.sh from xfconf.
- Panel: Avoid recursing gtk_main_quit() on signal.
- Tasklist: Hide wireframe when window is destroyed (bug #7377).
- Directorymenu: Remove unused varaible.
- Pager: Fix typo in row warning.
- Tasklist: Fix function prototype.
- Panel: Do no inline function.
- Tasklist: add button release event to proxy item (bug #7362).
- Translation updates (zh_CN, tr, de).

4.8.2
=====
- Change packing order of buttons in pager to match wnck.
- Initialize tasklist viewport if screen is connected (bug #7255).
- Set some atk object names on panel buttons without label.
- Allow installation of the helpers in a custom location.
- Set a static role for the panels (bug #7094). Reverted the previous fix.
- Ask to start the panel if 'xfce4-panel -r' is called without instance.
- Respawn a child if the plugin was realized with a pid.
- Don't crash on a wrong colormap when changing screens.
- Don't activate windows in tasklist when dnd a button or plugin.
- Keep reference on window to avoid crash (bug #7193).
- Activate windows on button release events (bug #7296).
- Use the widget snapshot as tasklist draw icon.
- Fix test so manual is installed (bug #7274).
- Translation updates (he, sv, id, zh_CN, da, kk, pt, uk,
  zh_TW, ja, ru).

4.8.1
=====
- Make the panels sticky for some window managers (bug #7130).
- Fix assert when storing property values in xfconf (bug #7117).
- Migrate monitor information (bug #7135).
- Cache launcher menu tooltip pixbuf (bug #7146).
- Reverse menu item insert order (bug #7102).
- Set and restore a unique role name for windows (bug #7094).
- Don't return a critical on a NULL dbus session.
- Allocate 1x1 requests offscreen in the systray (bug #7143 and #7057).
- Popup window menu under cursor on window button group menus.
- Directly start the panel on the correct screen (bug #7161).
- Move the panel menu to the correct screen (bug #7203).
- Fix dragging panels to another screen.
- Open plugin dialogs on same screen as plugin.
- Sync hidden window and panel screen.
- Show launcher add dialog on the same screen as parent.
- Fix autohide direction based on orientation and edge.
- Deactivate menu button if loading menu failed.
- Don't double expose the panel's child widget (bug #6872).
- Remove unneeded check (bug #7149).
- Don't disappear when wm restarts with compositing (bug #7194).
- Properly update the plugin background when moving to other panel.
- Unset visible event window in 4.6 plugins.
- Various small code cleanups and improved debug messages.
- Translation updates (eu, fr, ja, lt, sv).

4.8.0
=====
- Restart tray allocation if number of rows overflows (bug #7055).
- Restart systray manager on compositing changes.
- Add additional debugging information with filtering support.
- Fix tasklist craches on window unmap (bug #7076).
- Translation updates: French, German, Arabic, Russian, Portuguese,
  Romanian, Lithuanian, Swedish, Chinese (Taiwan), Greek, Polish,
  Croatian, Hungarian, Catalan (Valencian), Norwegian Bokmal.

4.7.7
=====
- Bind panel translation domain for external plugins (bug #6932).
- Allow reordering plugins in preferences with dnd.
- Open plugin preferences on double-click (bug #6975).
- Change launcher dnd code for plugin moving.
- Send drag motion event to parent widgets.
- Do not make the itembar insensitive (bug #6818).
- Fix some prototype variable names.
- Fix warning when removing a panel with a 4.6 plugin.
- Fix order of menu items based on screen position (bug #6978).
- Drop too-new Gtk API.
- Various improvements in the launcher dialog.
- Don't use the session manager in action plugin.
- Add option to filter tasklist window by monitor (bug #5199).
- Remove plugin when dropping in items dialog (bug #6976).
- Bump copyright to 2010 and fix licenses.
- Also load desktop files from xfce4/panel/plugins (bug #7013).
- Install desktop files in xfce4/plugins/actions (bug #7013).
- Make vertical clock rotation optional (bug #7002).
- Fix various size allocation issues in clock (bug #5219, #3960).
- Fix plugin dnd with locked panel and outside itembar.
- Add missing function to libxfce4panel.symbols.
- Fix ABI check on ppc (bug #7009).
- Fix typo in function name.
- Add application menu in default layout.
- Fix invalid unref.
- Make sure launchers are properly removed and saved.
- Fix vertical tasklist buttons in non-vertical mode.
- Fix thinko in screen handling (bug #6830).
- Workaround un nusable plugin when moving to other window.
- Add xfce_panel_pixbuf_from_source().
- Use xfce_panel_pixbuf_from_source() in XfcePanelImage.
- Use XfcePanelImage in the launcher menu.
- Use xfce_panel_pixbuf_from_source in launcher dialogs.
- Optimize loading icons from absolute paths.
- Fix some compiler warnings.
- Move hidden name handling to plugin.
- Use foreach to add application to store.
- Move arrow button to plugin widget (bug #6694).
- Only use orientation in systray box.
- Remove unused variables in box structures.
- Drop child structure from box and only use widgets.
- Improve sort function a bit + other tiny changes.
- Move composited child function to plugin.
- Use xfce_panel_pixbuf_from_source() to load known apps.
- Add some known tray application names.
- Try WM_NAME(STRING) too for tray application name.
- Redo icon positioning (bug #5565, #9650 and more).
- Drop some unused systray code.
- Block grabs from outside the panel.
- 1x1 invisible icons doesn't seem to be true (bug #7044).
- Bump copyrights to 2011.
- Translation updates (ca, cs, da, de, en_GB, fi, gl, he, hr, hu, id,
  it, ja, kk, nb, pl, pt, pt_BR ru, sk, sv, uk, zh_TW).

4.7.6
=====
- Always use applications menu for default menu.
- Fix Exec key in desktop file handler (bug #6912).
- Fix if statement in xfce_tasklist_button_visible().
- Depend on garcon 0.1.4.

4.7.5
=====
- Don't destroy the about dialog.
- Allow using enter in the launcher treeviews.
- Fix crash in always group mode (bug #6792).
- Drop the automatic grouping option from tasklist; not implemented yet.
- Fix Gdk key macro names.
- Fix confustion with panel opacity (bug #6827).
- Make miniature view the default in the pager (bug #6825).
- Fix wrong capitalization of Xfce.
- Fix issue in systray size allocation with 1 row (bug #6809).
- Fix 'add launcher' desktop file.
- Improve debugging output for display changes.
- Restore shadow of spin button in systray dialog.
- Add function to return the Xfconf panel name.
- Warning why # pager rows does not apply (bug #6555).
- Gracefully handle abort signal (bug #6563).
- Restart the panel if we receive SIGUSR1.
- Fix format of 12-hour clock.
- Add option to not rotate buttons in vertical panel (bug #6687).
- Propertly handle insensitive clock colors.
- Set correct session priority.
- Improve support for a menu editor (alacarte) in the applications menu.
- Don't destroy the application menu under the users' cursor on reload.
- Add window DND to the pager in tasklist.
- Make viewports work in the tasklist (bug #6898 and #6665).
- Support viewports in button pager.
- Translation updates (be, ca, da, de, eu, fi, gl, hu, id, it, ja,
  kk, nl, pt, sk, ta, uk, zh_CN, zh_TW).

4.7.4
=====
- Add support for menu monitoring.
- Allow translations of the "Xfce Panel" string.
- Add submodule to xfce4-docs/xfce4-panel-master.
- Fix accelerator key conflict (bug #6765).
- Add test for docs module and depend on xdt 4.7.3.
- Fix distributing the manual in the dist tarball.
- Translation updates (ug, gl, zh_TW, de, sk, nl, da, kk, uk, pt,
  de, it, ja, el, fi, sv, ca, eu, hu).

4.7.3
=====
- Add support to run plugins in valgrind.
- Add lXext to tasklist libraries (bug #6471).
- Add a pager mode with normal buttons.
- Fix menu positioning with autohide panels.
- Always wait for a grab if we popup menus from events.
- Don't handle grabs on the window from menu's.
- Register the plugin menu to block autohide.
- Make the session warning a non-aborting error for startxfce4.
- Allow to quit the panel if no session manager is running.
- Improve checking if we own the dbus name.
- Delay allocation of event table until we use it.
- Add workspace settings option to pager submenu.
- Libxfce4panel-1.0.pc is missing variable localedir (bug #6629).
- Remove deprecated encoding key from desktop files.
- Move helpers applications to $libdir.
- Move module panel plugins in $libdir/xfce4/panel/plugins.
- Add cast to fix a compile error in external 4.6 plugins.
- Fix activating the panel when a plugin asks for focus.
- Translation updates (pt_BR, da, hu, de, pt, ca, fr, kk, it,
  zh_TW).

4.7.2
=====
- Fix typos in translated strings (bug #6350).
- Fix rounding issues in panel borders.
- Empty channel if 4.6 migration failed.
- Load the xfce-applications.menu as default.
- Add support for more background options (bug #1731).
- Improved debugging support using the PANEL_DEBUG environ variable.
- Add LIBXFCE4PANEL_VERSION.
- Link tasklist plugin to x11 (bug #6471).
- Fix some (possible) problems when building documentation.
- Add support for X-XFCE-Unique=SCREEN.
- Make sure there are not 2 active windows on ws-changes (bug #6474).
- Make the systray takeover selection.
- Ask to start panel when opening preferences without instance.
- Add logout to plugin menu and drop quit and restart.
- Add separator between help and logout in window menu.
- Improve and cleanup code for external plugins (bug #6358).
- Change colormap handling (bug #6358).
- Add debug mode to run plugins in gdb (export PANEL_DEBUG=gdb,
  logs in /tmp directory).
- Use activate signal for launcher menu items (bug #6485).
- Fix launching from primary clipboard (bug #6488).
- Translation updates (pa, es, id, ru, tr, kk, ca, it, uk, ug, hr,
  bn, fi, gl, pt_BR, de, da, eu, sk, pt, el, zh_CN, el).


4.7.1
=====
- Support for dragging menu items to create launchers (bug #2896).
- Fix segfault when directory is NULL (bug #6336).
- Restore button label binding in applications menu (bug #6277).
- Give the wrapper a widget name for theming (bug #6268).
- Add existing windows in the tasklist (bug #6273).
- Store the drop highlight position (bug #6270).
- Add option to application menu to show tooltips.
- Use exo desktop file names in default config.
- Set desktop type when migrating 4.6 launchers.
- Fix icon button allocation in tasklist (bug #6269).
- Properly handle exit status.
- Restart external plugins on compositing changes.
- Give panel windows good theming names (bug #6268).
- Only return default title in applications menu is NULL.
- Add Mallard page for theming (only reminder for now).
- Fix handling of custom menu items.
- Fail when compiling with --enable-gen-doc, but checks failed.
- Make the always group functionality work.
- Properly rebuild tasklist if a windows' workspace changed.
- Support remote event replies from the wrapper.
- Improve manual Makefile.
- Restore old workspace scroll behaviour (bug #6271).
- Handle pager orientation.
- Improve debugging in external plugins.
- Add some more checks in the 4.6 macro.
- Fix expand overflow (bug #6312).
- Add drag activate for window buttons in the tasklist.
- Add scroll support to switch between windows in tasklist.
- Handle window autohide blocking in application.
- Change order of plugin signals on startup.
- Add option to fix the length of the panel.
- Set icon geometries for the tasklist buttons.
- Use gtk_widget_get_ancestor() instead of custom function.
- Translation updates (ru, kk, it, uk, el, bn, fi, si, da, eu, sk, pt).


4.7.0
=====

General
-------
- Almost a complete rewite of the code. Everything is now written
  in GObjects. This makes each individual part easier to understand.
- All plugins are ported to GObject-based plugins and use Xfconf for
  storing their information (apart from desktop-files of launcher).
- Interfaces are all created by GtkBuilder.
- Ported to new Libxfce4ui (4.7.1) and Garcon (0.1.1) libraries.
  Other dependencies include Gtk+ 2.14, Glib 2.18, Xfconf 4.7.2,
  Exo 0.5.1, DBus-Glib 0.73 and Libwnck 2.22.
- Documentation (will be) written in Mallard.
- On first startup a dialog will appear to migrate old panel config,
  start with the default setup or one empty panel.

Panel
-----
- Panels can be dragged around the screen and snapped to every panel
  edge. Each panel also has a setting to control the window length (%).
- Possibility to lock panels. This will fix the position and hides the
  handles of the window.
- Alpha backgrounds.
- Item (plugin) editor in the preferences dialog, so you can easily
  add, move, delete and edit plugins that are sometimes hard to reach.
- Using Xfconf for storing the panel settings. Panels also watches the
  Xfconf channel for changes, except for adding and removing panels.
- New code for monitor/screen positioning. This should work a lot
  better with randr.
- DND of desktop-files on the panel to create new launchers.
- Possibility to add new plugins from the command line, including
  startup arguments.
- External plugins are automatically restarted if they have not
  crashed in the last 60 seconds. If they crash more then once in
  this time window, the user is asked what to do (restart or remove).
- Gtk style properties for popup/popdown delay (bug #5707).
- Hidden option to disable struts for windows on a screen edge, so
  the space is used by the window manager for other windows.

Plugin Framework
----------------
- Plugin API should still be the same, however the ABI changed so
  you need to recompile plugins against this version of the panel.
- New way to run plugins compiled as modules externally. Whether a
  plugin runs internal or external is controlled by a boolean in the
  desktop-file of the plugin. This does not affect the 'old' external
  plugins that are compiled as binaries, it is however recommended to
  port plugins to this new framework (only Makefile and macro change)
  since it is more flexible.
- Communication between the panel and wrapper (that embeds plugins to
  run external) is handled through D-Bus.
- XfcePanelPlugin is now a single object (not an interface for 2 other
  objects). This drops a lot of code.
- Some new API and a couple of deprecations. Some of the new
  functionality is only available in the new plugin framework.
- New way to build plugins as GObjects with XfcePanelPlugin as parent
  type. This gives all advantages of GObject like type checking.

Actions Plugin
--------------
- New settings dialog that allows one or two actions in the plugin
  in each order you want.

Applications Menu Plugin (new)
------------------------------
- Plugin similar what Xfdesktop provided, but using Garcon.
- Gtk icons size property to control the menu icon size.
- Script to popup the menu, optionally under the cursor.

Clock Plugin
------------
- New fuzzy clock mode.
- Improved vertical orientation.

Directory Menu Plugin (new)
---------------------------
- Menu that provides a directory tree in a menu. It allows to quickly
  open a Terminal or File Manager for some directory.
- Possible to set a file filter for files that should also be
  visible in the menu. Files are opened by the default application
  that provides the mime-type reported by GIO.
- Gtk icons size property to control the menu icon size.
- Script to popup the menu, optionally under the cursor.

Launcher Plugin
---------------
- Support to create a launcher from the command line with a number of
  desktop files as argument.
- New dialogs, with an application finder like interface to add new
  applications and using the Exo item editor for modifying launchers.
- The desktop files are stored in the .config/xfce4/panel/launcher-$id
  folder and monitored for changes.
- Possibility to use desktop-id in the default configuration which are
  read from a GarconItemsPool on first startup. This is a very useful
  feature for distributions providing a custom default config.
- Gtk icons size property to control the menu icon size.
- Option to show labels instead of icons.

Pager Plugin
------------
- Button to quickly access the Xfwm4 workspace settings.

Separator Plugin
----------------
- Same drawing modes as previous panel, but a check button for expand
  instead of a mode.

Notification Area Plugin
------------------------
- Support for transparent tray icons (required at least Gtk 2.16).

Window Buttons (tasklist) Plugin
--------------------------------
- Option to only show icons. This drops the icon box plugin.
- Complete rewrite, not entirely finished yet (group buttons are not
  working yet + some other less noticeable features).
- If the list becomes too crowded windows will show up in an overflow
  menu, similar to what a menu bar does.
- Option to set the sort mode of the tasklist.
- Draw wireframe of the window on mouse hover, similar to the Alt+Tab
  wireframe in Xfwm4.
- A lot of style properties to tune the behavior of the plugin.
- Vertically orientated buttons for vertical panels.

Window Menu Plugin
------------------
- Gtk icons size property to control the menu icons size and minimized
  icon translucency.