Utilizing my caveman math, and trying to figure out who on the panel is over 65 and/or not going to be staying, I came up with a total of about 300 pilot slots gone if you don't count the SO's who are not eligible to fly anything else.
The fleet plan calls for only 2 aircraft gone total over the next year - though the SO seats are ALL going so that skews it down a bit.
I'm guessing the vacancy bid will be about 250 seats total. You can probably figure out which planes will get them...