Did they say when in May? The letter they sent out to the people on the waitlist said it would be unlikely to hear anything until June? I wonder if by May they mean May 31 or somewhere much earlier, like May 1 or May 15. That'd make a huge difference for some of us who want to go there and are stuck in limbo.
Historically, I think it is very hard to get off any waitlist. Who knows what it will be like this year at W&M. The odds are probably against any one individual, but I would say it's likely that SOMEONE will get in. The way I think about it, it might as well be me (or you for you obviously).