Vale a pena o upgrade.

Changelog:

RC1:

* Media uploader and gallery improvements
* Image caption and image editing fixes
* Press This fixes
* Ability to toggle between the flash uploader and a regular browser uploader
* Notification bubble on the Plugins menu when plugin updates are available

Beta 3:

* Image captions
* Yet more inline documentation
* “Add Media” buttons for the RTE full-screen mode
* Theme Preview fixes
* Gallery sorting fixes
* I18N fixes

Beta 2:

* Insert image and edit image fixes
* SSL fixes
* i18n fixes
* Lots of new inline documentation
* Improved tag auto-suggest
* TinyMCE 3.1.1 with Opera 9.5 and Safari fixes, proper align = center removal, and improved embeds support
* jQuery UI 1.5.1

Beta 1:

* Post Revisioning
* A “Press This” bookmarklet for tumblelog style quick posting
* Caching of static files with Gears for faster Admin page loads
* A new and improved image editing dialog that offers lots of control over the images in your posts
* Theme previewing as seen on WordPress.com
* Built-in word counting in the post editor
* The ability to disable remote publishing for the security conscious
* XML-RPC API for changing blog options
* Better SSL support for the Admin
* Hierarchy-aware paging in the Manage Pages and Manage Categories admin pages.
* The ability to relocate your content directory
* The ability to move wp-config.php out of your web root
* Drag-and-drop sortable galleries
* Customizable default avatars
* Bulk delete, activate, and deactivate for plugins
* Check box range selection with shift-click
* TinyMCE 3.1.0.1 with lots of bug fixes
* jQuery 1.2.6 with some nice performance improvements
* jQuery UI 1.5
* Lots of bug fixes and performance improvements