I was really hoping that the addition of IDLE support combined with IMAP would let the Blackberry receive my MobileMe email as immediate push like my Nokia does. Although, I must say that every 15 minutes for email should be just fine. I mean, if somebody needs me IMMEDIATELY they should call or text. Or IM. This won't deter me from getting a Bold the second they're available from AT&T of course.
It's just that it would have been a spiffing feature to have.