Today's announcement is just letting everyone know the date of said surgery. And, as you've read before, it'll be done in Philadelphia. Officially: the surgery will be done at Hahnemann University Hospital in Philly by Dr. William Meyers.
JM says Olesz should be out eight weeks, but since some football players have come back from this surgery in as few as five weeks, it may not take that long.
JM told me that players like Gregory Campbell had long recovery times from this, but this was during the offseason when there wasn't as much pressure to get back. I wouldn't be surprised to see Olesz back practicing in five weeks and back in the lineup in six-seven weeks. Semantics, I know.
Even at eight weeks, Olesz could be back by March 23 against Carolina, giving him 10 games (perhaps more, playoff heads) back with the team.