Julie Larson-Green Talks about “Blue” and the Future of Windows | Windows 8 content from Paul Thurrott's SuperSite for Windows

In other words, don't bother reading the Windows "Blue" rumor mill until the June conference

"Blue is not a major release. “There aren’t major changes, some things are wildly inaccurately reported [flips her hand, fan-like, in the air], some things are wildly accurately reported [flips the hand again], so somewhere in the middle [again with the hands]. We’re working hard on … enabling new kinds of hardware and new kinds of software and doing some innovations in the product, continuing on the things we started AND responding to customer feedback.”
When will Blue ship? “[Blue] comes out at the end of the year. In fact, you can get your hands on it [at the] end of June … at our developer conference [BUILD]."

Julie Larson-Green Talks about “Blue” and the Future of Windows | Windows 8 content from Paul Thurrott's SuperSite for Windows