In IGN's early predictions for 2009
They just state what is known, but well at least they say it. Microsoft is only interested in games on the XBox 360. Sure they develop DX11 and Windows. But at the same time they shut down their studios that made some classical big PC games. Basically they say "here is DX11 and Windows 7 which is awesome for games on PC" while themselves only developing for XBox 360 because they think that's where all the money is.