We just posted the release candidate of the Windows Media Center Software Development Kit 6.0 for Windows 7 – same url as the beta release:
[Hyperlink Removed] The RC release has been superseded by the RTM release. Visit this post for the download location.
You can leave feedback here or chat about it over at http://discuss.mediacentersandbox.com.
Note to developers: For all intents and purposes we are done with Windows 7 – if you want to report issues (application compatibility or otherwise) you should immediately grab the Windows 7 Release Candidate and this SDK and test, test, test – last call!