If we accept the rumour/report (?) that the RC will be on Technet on the 10th April, I think you can get ready, over the next two or three weeks, for a deluge of leaked builds. As with Vista in its final stages, the Partners are sending back there debugged builds thick and fast now. They are abviously very prone to being pirated.
Best thing , imho, is to go with the last stable pirated build, 7048, and wait for the RC.