If you look at the MSDN library , you might now find the pre release documentation for the Windows Phone 7.1 ( Mango )
Microsoft has also published 20 + interesting samples which targets the Windows Phone 7.1 ( Mango ) as part of pre release documentation .
Here are the list of samples which you can find for Windows Phone 7.1 in MSDN
- BasicCamera Sample
- Camera Grayscale Sample
- Search Extensibility Sample
- Local Database Sample
- Silverlight/XNA Framework Sample
- My Little Teapot Sample
- Ringtones Sample
- Background Audio Player Sample
- Tic-Tac-Toe Over Sockets Sample
- Shake Gesture Library Sample
- Tile Sample
- Shell Tile Schedule Sample
- Tile Notification Sample
- Toast Notification Sample
- Raw Notification Sample
- Reminder Sample
- Background Transfer Service Sample
- Execution Model Sample
- Raw Sensor Data Sample
- Simple Motion Sample
- Augmented Reality Motion Sample
- Background Agent Sample
Visit the MSDN Library to download the samples
