- The new Desktop-Style Home-Screen (moveable and customizable shortcuts. Completely slideable once to left and right!)
- StreetView (awesome implementation, can use Compass if available! Feels just like on the Desktop.)
- The browser (feels faster)
- Ringtones for Contacts
- New Dialer (+ Calculator)
You can find 31 additional screenshots here.
VentureBeat also has posted an analysis of the Android SDK.