I don't think we know that they are still calling for sure. I suspect that they are.
Omores (1st year med student at Duke) seemed to indicate on Friday that they stopped calling relatively early because the person doing the calling had to leave. That would seem to indicate that they will be calling the rest of those 138 people today. However, there were people that claimed they got phone calls (Original, for one) after 1 PM, so maybe they were calling all afternoon on Friday, which might mean they don't have a lot of calls left to make today... 🙁
From interviewfeedback.com, supposedly, people who interviewed after February 25th (ie - me!) will be discussed this week at committee.
So, good luck to all of us! 🙂