There is not a new update for NBA 2K21 very often now, which may also be due to the fact that NBA 2K22 should appear in a few weeks.
Now there is a new update, NBA 2K21 Update 1.12 is now available for download. On the PS4 you have to download around 17GB, the file sizes of the other platforms are not known to us.
NBA 2K21 Update 1.12 Patch Notes
The official patch notes are still a long time coming. We will update this article as soon as the patch notes are available.