I got an email from Denver Korbel School which stated:
"Many thanks for your interest in the Korbel School, and congratulations on your admission to the PhD program. I am one of the PhD program directors and am eager to talk with you about the University of Denver and our school. Let me know if there is a good time for me to call or skype you and I can answer any questions you might have. The admissions committee believed you were a particularly good fit with our faculty and curriculum and we hope you will join us next fall."
However, there was no attached official admission letter, so I don't know if this e-mail meant I got accepted or I just got an interview opportunity.