From the monthly archives:

August 2008

Windows 7 Server Version Will Be Windows Server 2008 R2

Microsoft has confirmed that Server version on Windows 7 will be called as Windows Server 2008 R2. Meanwhile, this windows 7 server version will not be major update or release compare to current Windows Server 2008 OS.
This has added a lot of confusing why the Windows 7 Server edition call as Windows Server 2008 R2. [...]

Windows Seven 7 Official Blog from Microsoft

An official windows seven 7 blogs has been set up by the two senior engineering managers , Jon DeVaan and Steven Sinofsky to discuss more windows 7 development news and others.
Planning a product like Windows involves systematic learning from customers of all types. In terms of planning the release we’ve been working with [...]