Actually I hadn't noticed until yesterday. Call me slow.
I guess what I'm waiting on is to finish with the AA. Right now, if I turn on 40-man rosters, I would probably need to automanage teams (so they would fill their fourty mans and there wasn't just the chaos that would ensue if I decided what their 40-man was) and if I did that, all of the minor leaguers would be scattered and it would be much more of a pain for me to edit the rosters.
It's something I'll do down the line, but for now it's probably easier for me to distribute them like this, and for you guys to turn them on or leave them off if you wish.