This are some of the user features I'm looking forward to..
- Faster Camera start-up and image capture
- Much faster acquisition of GPS location (powered by SUPL AGPS)
- On-screen soft keyboard
- SIM Application Toolkit 1.0 (think MPESA, ZAP)
- Google applications
- Batch actions such as archive, delete, and label on Gmail messages
Full feature list for both users and developers are here:
Nothing about battery life though. The best way it seems is to turn off data and GPS when not using them.