I think most developers were seeing 3 day approvals at times last year. I recall Apple boasting about their fast turn-around at some point (high 90th percentile in 7 days, IIRC).
We got a three day turnaround last year after the iTC holiday shutdown. Submitted on December 29 or 30 I think, and it was approved by the 2nd of january. Guess everybody was trying to get in before the holidays, and then just took a break, meanwhile Apple had beefed up their team for the holiday spike.