Microsoft has released Windows Phone SDK 7.1
The Windows Phone Software Development Kit (SDK) 7.1 provides you with all of the tools that you need to develop applications and games for both Windows Phone 7.0 and Windows Phone 7.5 devices.Windows Phone SDK 7.1 released
The Windows Phone SDK includes the following
Microsoft Visual Studio 2010 Express for Windows Phone
Windows Phone Emulator
Windows Phone SDK 7.1 Assemblies
Silverlight 4 SDK and DRT
Windows Phone SDK 7.1 Extensions for XNA Game Studio 4.0
Microsoft Expression Blend SDK for Windows Phone 7
Microsoft Expression Blend SDK for Windows Phone OS 7.1
WCF Data Services Client for Window Phone
Microsoft Advertising SDK for Windows Phone
