What new in windows phone 7 - Mango.
- Silverlight 4
- HTML 5
- Internet Explorer (IE) 9 web browser control
- Hardware acceleration support
- New profiler and emulator for testing
- Silverlight + XNA together
- Background processing
- Direct camera access
- Gyroscope supports
- Enhanced communications capabilities including Windows Live Messenger integration
- Fast-application switching
- Speech-to-text SMS capability
- Full integration with BING maps
- TCP/IP sockets
- Access to calendar and contacts
- Live Tiles
- Local database
- Background audio
- Device Status
WP7 Developer offline documentation available here.
To download the beta release of the Windows Phone 7.1 Developer Tools for Mango here.
Windows Phone7.1 OS code samples available here.