Earlier this month, EA Sports made it official that anyone expecting updated rosters on NBA Jam was SOL. That’s for the console versions. The game’s iOS version just got a roster tweak today, in time for the soon-to-begin playoffs.
https://lastchance.cc/ea-sports-throws-in-the-towel-on-nba-jam-5780839%3C/a%3E%3C/p%3E
My only guess is that it’s easier to publish a title update with a fresh roster to the iTunes App store than it is to roll a patch to PlayStation Network or Xbox Live. That, plus the fact NBA Jam was a bit of a sales disappointment on the consoles, but is a strong performer on iPhones and iPads, is probably why that platform is the one getting post release support.