Microsoft patterns & practices has announced the February 2008 release of the GAT and GAX.

This new release includes support for Visual Studio 2008 as many were waiting for.
The main improvements to the July 2007 CTP release are the following:

• Support for Visual Studio 2005 and/or Visual Studio 2008. This version of GAX will run on either version of Visual Studio. If you don’t have GAX installed, you can install GAX to support Visual Studio 2005 or Visual Studio 2008 or both. The installer will automatically determine which versions of Visual Studio you have installed.
• Updating GAX.
• Visual Studio side-by-side support
• Improved Uninstaller

Read all the details in Grigori Melnik’s blog post. 

Links:

• Guidance Automation Toolkit and GAX - MSDN homepage.
• Download the Guidance Automation Extensions and Guidance Automation Toolkit February 2008 Release