How do you know this? Seems like there is SO much conflicting info these past few days, I am getting confused....
I don't think that the messages are too conflicting. It seems like the last decisions will be made this week and next week. Letters (WL, R, last acceptances) will be sent out the 1st and 2nd week of April after the last committee meeting. However, after reading last year's thread, letters may not come until late April (DELAYS! DELAYS! DELAYS!).
For anyone interested, here's a link to last year's thread (thanks to takeachanceonme):
http://forums.studentdoctor.net/showthread.php?t=204125
Since I haven't heard of anyone recieving a phone call yesterday (committee did meet yesterday), then it seems accurate to say that the ADCOMM is not making anymore phone calls to applicants.
I think the ADCOMM is scrambling to make decisions, and they have a whole batch of applicants they have not decided upon yet.
If you look at other threads, you will see that they have already rejected several people. However, I don't know if these rejections are post-interview. So, no new is still good news. Well, this is true at least until mid-April. After that, WLs and Rs galore! At some point in April, applicants will be able to call into the Admissions Office to find out their status. Those that are WL'd are going to have to wait until after the May 15 AMCAS deadline for students to withdrawal from UNC. Only then, will people start coming off the WL.

So, to answer your original question: "How do I know that next week is the last ADCOMM meeting?" Well, it is because I heard it from someone outside the Admissions Office.
😕 Confused? I know! I don't want to give too much info and accidently reveal my source, but I believe my source has more credibility than any of the people in the AO who have been sending us mixed messages.
I guess that's it for now... let's just hope I am wrong about this...
🙁