Number of Retro teams in 2k13

Can all the Retro teams and legend players in 2k12 be found in 2k13??

I only want to play 90's Bulls

We have no idea yet. I would assume they would be but nothing has been stated from 2k yet. They just started giving everyone some info about the game.

Presumably there'll be a decent amount of historical content, but I wouldn't be surprised if they didn't include every single team from NBA 2K12. NBA's Greatest was their backup plan with the lockout last season, obviously that isn't an issue this year.