Congrats breezie! I got accepted today as well, for Sea Operations (aka MARS), which was my first choice. Possibly the best phone call I've ever received.
I got told the same thing for BOTC (IAP), so I guess everyone who's accepted this year does it summer 2009. What we will be doing is 4 week RMC intro course, at RMC. I don't know if this was the practice in earlier years, but I do know that my reporting date to RMC is August 3rd.
Good luck to everyone else! There's still another two rounds of selections (IIRC).