Not promising to say the least.
And I say "leaked" loosely. Influencers are given early copies of the game to do just this, and part of it is to get a pulse and gauge reaction.
https://www.reddit.com/r/NBA2k/comments/pjc4qv/some_gameplay_of_dribbling_and_dunk_aiming/
This looks like 2K21 with more unrealistic dribbling, more skating, and dunk/alley-oop timing
I believe he has the game speed up to 65. But that doesn't change my concerns.