Not trying to spam videos but here is some footage and info I was able to get from 2 guys that got the game early
thanks to @thisiskevG and @pgcraiig on twitter
WNBA player editing is in the game
New options for shoe brands that can be edited
hair seems to have the same options
New animations added
New GUI, more simplistic ( I like it, probably easier to mod also)
there are supposed to be new options when downloading team designs (like downloading jerseys only or stadium only) not 100% confirmed but hinted in an interview
2012 and 2016 teams useable in play now and myleague