I'm happy to tell you all about the beta of WinFX 247 at http://www.winfx247.com/.
I decided to split the Avalon/WinFX/Longhorn/WinFS/Indigo stuff out of .NET 247, for fear of .NET 247 users getting annoyed with all this new leading edge stuff. The site behaves mostly like .NET 247, except it's dedicated to newsgroup and discussion content. There will be no article listings.
It is a beta - in particular the search doesn't work until Google decides to spider the site.
I'm happy to hear feedback. Please use the 'Feedback' link on the site.
Thanks all! Matthew Reynolds