I've just been admitted to the PhD program at the U of M--and assigned to the advisor I requested! I start in January :-)
Weird thing about universities, though: I was emailed a form for "Residency Reclassification" to fill out before I discovered (only through logging in to my online ap) that I had been actually been admitted. The same thing happened to me when I was admitted to Stanford--I received an email from a "Stanford buddy" and a list of dorms to choose from before it was finally "admitted" that I was "admitted."
I'm still really excited to begin...