Hi insearchofmsw, I was accepted and still haven't received this letter either. I called Lance Fooks on Tuesday, I think, to ask about this and he said that it's just taking a lot of time to get the letters out. Something about processing our transcripts. But he basically told me not to worry and that I have indeed been accepted.
Hopefully that helps ease your worries! But if it would give you peace of mind, you can always call just to be sure.