The change log has been available for about a week on numerous android sites. Here is a list of features that we got.
- Market will be updated to Play Store (that should've already happened, actually), as well as Books, Music, and Movies updated to their Play varaints
- ASUS Vibe will be updated from 1.0 to 2.0 with an improved interface and content
- LAN Support via USB to ethernet adapter
- Ad-hoc network support
- The ability to choose between landscape and portrait mode when using HDMI output to a TV
- Handle notifications from Lock Screen
- Face unlock
Hope this helps.