It may well be that he has a job in name in the new structure but not actually a role and after some discreet period he will be put out to pasture. Kind of sucks if you wanted him to receive some sort of cathartic day of reckoning but maybe a pragmatic solution.
The press release says they're keeping Kotick for the duration of the transition, then everyone will report to Phil Spencer. Seems likely that Kotick will be gone soon(ish)