For 2012, 19% were accepted ED, but subtracting about 160 athletes, the acceptance rate is more like 13%. Over 2000 were deferred, which is about 70% (which isn't very nice because they end up rejecting most of those deferred later anyways). This leaves about 11% rejected.
And SAT scores can take up to 2 weeks and they may not update your file immediately so I wouldn't worry yet.
Don't panic yet if you haven't gotten a call or e-mail about an interview and you are an ED candidate. The regional chairs who assign the interviews are sometimes behind on this, and there is some later shuffling around of assignments. However, do check your "spam" mail regularly. A lot of e-mail services, and notoriously true of school based ones in particular, will dump your interviewers mail to you into spam as an unknown address. The interviewers are supposed to get the reports back to Brown by December 1st for ED, so if you haven't had any contact by the end of this week, then I would call admissions to check on this. Also, while Brown tries to offer every applicant an interview, there may be cases due to no available interviewer in your area, where some students will not be interviewed. (That does not count against you, either.) Good luck, have fun and enjoy your interview!
Do you think I should contact Brown about whether they have received my SAT Subject Scores? I sent them on 26th October and it says its missing although more than two weeks have passed (on the application summary thing).