Same here! I submitted in the first round. I just now called the admissions office and they said that my application is under review. For sure we will get to know by Dec 21st.
She also said that for those who are not selected will have a chance to talk to the admissions committee in June 2012 to see what can be improved in the application.
Good luck with your apps! 6 BTG members have reported that they got an interview invite. You can see detailed profile data about these members by going to the Darden Applicant Stats page. Also you can talk to other members who have applied on the Darden Comment Wall.