The major new features are WebGL support for the HTML5 output so now Firefox >=4.0 and Chrome >=9.0 are also supported. Another highlight is the built-in web server to simplify local testing.

Here is the complete list of the new features:

Built-in web server
HTML5 WebGL support (Firefox, Chrome)
HTML5 Gyro support
HTML templates now use SWFObject
HTML5 multi-touch support for Android 3.1 and Blackberry Playbook
Hebrew and Greek translations
There have been also a lot of bug fixes. For instance, Flash panoramas work again in Flash 9/CS4.
We also did a lot of the improvements in every other part of the software.

1. Fix the bug concerning burning and display error and make the burned disc be more compatible with DVD Player.

2. Fix the bug concerning the extra downloaded menu templates couldn't be saved normally in slideshow project file.

3. Support and update Czech language file for the program.

New Features:

Device | Improved Device Playback support: improved compatibility and many new devices added
Changes:

Core | Moved some device detection code out of core
Plug | Removed IView, AbstractIView, SWTManager and other deprecated plugin APIs
Device | Button for "Do Not Transcode"
Device | Sidebar icon for devices that supply one
UI | Switched all views using IView to UISWTVIew
UI | Moved all non UI table refreshing code out of SWT thread (should result in faster UI)
Misc | Removed various left over and unused code (saved a measly 200k)
Corrected bugs:

None.