From Ars Technica  - Emil Protalinsk

Microsoft has thus far been very tight-lipped on Windows 7; everything that we know about Vista's successor—which is very, very little—has been carefully disclosed to us by Microsoft. The software giant has already been heavily criticized for not having any public channels of communication open. Even Microsoft's own partners have complained that the company isn't telling them much, and they're the ones that really have to know the details so they can align their products accordingly. Anyway, it seems that the stance over at Microsoft is changing, but very slowly: the Engineering Windows 7 blog (E7 for short) is now live. More