There are few updates from Microsoft for Windows Phone 7 Developer Tools Update, Windows Azure, & Windows Phone 7 Training Kit for Developers – RTM Refresh. Check it out.

Windows Phone Developer Tools January 2011 Update

January 2011 Update to the Windows Phone Developer Tools providing bug fixes, a new emulator, and utilities. This update is composed of two installation files and includes the contents of the deprecated October 2010 Update.
HPC Pack 2008 R2 SDK w/ SP1

The Microsoft HPC Pack 2008 R2 SDK was designed to provide the tools and content necessary to write parallel applications for the Windows HPC Server 2008 R2 platform. The zip files are subject to the license terms for the SDK.
Windows Phone 7 Training Kit for Developers – RTM Refresh

This Windows Phone 7 Training Kit for developers will give you a jumpstart into the new Windows Phone world by providing you with a step-by-step explanation of the tools to use and some key concepts for programming Windows Phones.
Windows Azure Tools and SDK 1.3

Windows Azure Tools for Microsoft Visual Studio, which includes the Windows Azure SDK, extends Visual Studio 2010 to enable the creation, configuration, building, debugging, running, packaging and deployment of scalable web applications and services on Windows Azure.
Windows Azure Platform Training Kit

Windows Azure Platform Training Kit includes a comprehensive set of technical content to help you learn how to use Windows Azure, SQL Azure, and the Windows Azure AppFabric.
Web Camps Training Kit

Janaury 2011 release of the Web Camps Training Kit

Thanks to Microsoft Download Center