"New features
Theme and user interface touch-ups
Redesigned virtual keyboard with different font
Switch to voice mode to make text corrections
Multitouch capabilities to enter keyboard shortcuts
One-touch text selection
Power manager closes some CPU-hogging apps
More accessible power management app
Internet calling via SIP
NFC (near field communication) support
New download manager
Access to front-facing camera from camera app
Enhancements for game developers
API support for sensors including gyroscope, gravity, and barometer
New audio effects for developers, including sound mixing
Support for VP8/WebM video compression
Camera API access for developers"
Android 2.3's 'Gingerbread' OS: What's inside | Android Atlas - CNET Blogs
hope this helps.