Just tested this myself and the limit is sadly 30 Years (31 seasons) [2003-04 season to the 2033-34 season], so just like all the PS2/Xbox Maddens and also ESPN 2K5. Kinda disapointing b/c I've read a lot of past operation sports threads about this and a lot of ppl were commenting saying "unlimited" "100 years" "80 years" and sure enough its just 30 like the rest of them:
