2K today announced when the demo for NBA 2K21 will be available. The NBA 2K21 demo will be available on August 24th for PS4, Xbox One and Nintendo Switch.
Officially, NBA 2K21 will be available on September 4th, for PS4 and Xbox One, with the next-gen version to be available when the PS5 and Xbox Series X release.
NBA 2K21 will have some improvements and modifications to the core gameplay, with an overhaul of the Pro Stick for new dribbling mechanics.
NBA 2K21 Gameplay Video
Source: NBA 2K