What's new:
http://labs.adobe.com/wiki/index.php/AIR:Developer_FAQ#What_are_some_of_the_features_included_in_Adobe_AIR_Beta_2.3F
* System Tray icon/Dock Bar Bounce
* Synchronous database API
* Native menus
* Drag and drop enhancements including bitmap support
* Windowing improvements such as Z-order control and enhanced
* Activation and focus support
* Improved Install dialog look and feel
* Application-initiated runtime updates
* HTML security model improvements
* Mouse support for double-click and scroll-wheel
* Per-machine runtime installs
* Performance and memory enhancements
* XSLT support
* Support for Windows 2000
* Hundreds of bug fixes
Adobe AIR
http://labs.adobe.com/technologies/air/
Develop with Adobe AIR with HTML and JavaScript
http://labs.adobe.com/technologies/air/develop_ajax.html
Developer FAQ
http://labs.adobe.com/wiki/index.php/AIR:Developer_FAQ
Migration instructions (moving from Beta 2 to Beta 1)
http://labs.adobe.com/wiki/index.php/AIR:Migration
AIR HTML Security FAQ (covers additional changes)
http://labs.adobe.com/wiki/index.php/AIR:HTML_Security_FAQ
