According to this Tweet by the game’s official Twitter account, the third patch for NBA 2K15 has been submitted to Sony and Microsoft for approval, and should be pushed through within the next 10-14 days.
Patch #3 for #NBA2K15 has been submitted to Sony/Microsoft. Should be released within the next 10-14 days. Patch notes alongside patch.
— NBA 2K 2K18 (@NBA2K) December 1, 2014
As stated in the Tweet, a full list of release notes will be made available when the patch is out. However, Community Manager LD2K has mentioned that Patch #3 is “very big”, addressing some frame rate issues, nerfing some exploits, adding new hairstyles, updating face scanning, and more. Stay tuned for more details, as they’re made available.