I thought it had been re-branded as BUILD this year (and was going to have a massive Windows 8 focus). I've seen some reports of "PDC 2011" but then the dates and location are the same as build....unless they're going to run to conferences concurrently, which I doubt.
Correct. There is no separate PDC this year. The focus of Build at least in the promotion is definitely on Windows 8, who knows to what extent that reflects the content.