
The first roster update for NBA 2K15 will be released on Friday, October 10th, 1:00 AM Pacific time. NBA 2K developer's description of the update is as follows:

With the 2014-15 NBA season officially in the books after the Golden State Warriors were crowned as NBA champions, 2K Sports has released the final roster for NBA 2K15. The update releases injured players to active status.

A new list of deals is available this week on Xbox Live for those who owns a Gold membership.
NBA 2K15, Monopoly Family Fun Pack, Assassin’s Creed DLCs, Dark Souls 2, FIFA 15 and Tekken 6 are some of the titles being on sale this week!
xbox one sales are pretty bad...though this site is missing the fact the metro's are on sale

2K Games announced, to celebrate the Euroleague Final Four, a roster update for NBA 2K15.
Summary: If you have a save file in NBA 2K15, you may want to start over using the October 10 roster. This includes MyCAREER, Association, MyLeague etc.