Initial look at default settings says:
1) Hitters develop just a little later (24 rather than 22)
2) Pitchers don't look too much different, except...
3) Stuff now has a weird hump at 21-22, then falls off too sharply, then still looks to fall off too hard after 37 or 38.
So in the end, it appears modifiers are still required, though maybe a small fade on the development side. I'll try to fiddle with them more over the next few days. This is getting monotonous, though.