No details yet (gotta wait until January 6), but 8ing's making a Hunter x Hunter fighting game! Specifically, they announced it as a "full-scale fighting game", and people are divided between whether they're supposed to read between the lines and expect some throwaway arena spectacle Narultimate nonsense, or if they're being genuine and are going to attempt something traditional and halfway-serious.
The publisher is Bushiroad, notorious for shoestring budgets, so again, the response atm is split between "y'all are in for some shit" vs. "y'all are in for some shit"