As you know that WordPress 3.3 beta 1 has recently launched and it has some issues I mean bugs and now WordPress 3.3 beta 2 is launched with these fixes.

Take a look to these changes since Beta 1:

1- Blue theme Updated
2- IE7 and RTL support Fixed
3- flyout menu styling Improved and fixed several glitches
4- Finished the Pointers implementation
5- For new installs landed the dashboard Welcome box
6- Improved contextual help styling
7- Little more tweaked the admin bar
8- So many bugs fixed

I think now WordPress 3.3 beta 2 is more improved and you can download it from official page