The Windows Team has announced the availability dates for Windows 7 in blog tonight, Windows 7 Release Candidate Update. Brandon LeBlanc writes, "I’m pleased to share that the RC is on track for April 30th for  download by MSDN and TechNet subscribers. Broader, public availability will begin on May 5th."

You can see what is new since the beta release in posting on Engineering Windows 7:

Compatibility Readiness

ISVs are checking applications for compatibility and signing up for Windows 7 Compatibility Labs around the US. ISVS are also checking out the technical requirements and trying out the Windows 7 compatibility certification toolkit to self-test your own applications.

Light up Windows 7

In addition to compatibility, ISVs are lighting up Windows 7.

ISVs are also signing up to participate in the Windows 7 Virtual Readiness Day on May 9 to find out about technical and business benefits of Windows 7.

For more information about the features that make your application shine in Windows 7, see Windows 7 for Developers blog.

ISVs with Web applications are lighting up on Internet Explorer 8 with Web Slices, Accelerators, CSS. The content in MSDN has moved. Start here.

And look on this blog for a report on some cool ideas from the Windows 7 Innovation Days next week in Los Angeles.