There has been no official information from Microsoft but according to Engadget HD Windows Media Center TV Pack was released yesterday. I wish I could say more about it but I can’t!
Wow, we didn’t see this coming, at least not this fast — just a week after getting a sneak peek at release candidate zero, our friend Brent Evans pointed us to a Microsoft knowledge base article that clearly states "The Windows Media Center TV Pack was released on July 16, 2008." Our sources are now confirming this and unfortunately the earlier leak that this would be an OEM only update seems to be true as the very next line in the KB says
Windows Media Center TV Pack was released yesterday




Back in the UK for this weeks show. Andrew was away ...
Better late than never, a special show for you this ...
Garry and Andrew are back and we talk over the ...
This week Garry and Andrew were busy so Jason Coombes ... 
Not much point in this update if this is OEM only. People on the green button are not really happy. To be honest i don’t blame them I think it’s more than likely we may see two different releases. If this is the case why doesn’t MS just tell us the time line all this does is alienate people.
If its been released, wouldn’t that lift the NDA?
@Karl if there was no NDA I would be talking about it
Sadly as a long time supporter, this is another nail in the coffin of MCE for me. The release of Sony PS3 Play TV in September looks the ideal replacement and my HTPC will become a NAS hidden nicely in a cupboard.
No serious dialogue with the community, extremely slow inclusion of features and meanwhile the world+dog are either catching up or overtaking MS in this arena.
My feeling is there is an update coming this year that will include Sky support for UK users, maybe HD if we are “lucky”.