According to new reports, Apple is already developing a successor to the new M1 Ultra. Currently referred to simply as the M2 Ultra, the SoC could offer even more CPU cores than the M1 Ultra. Contrary to previous reports, the MacBook Air may launch with the Apple M2, while the next MacBook Pro 13 may get a new name.
https://www.notebookcheck.net/New-Apple-M2-Ultra-MacBook-Air-and-MacBook-Pro-13-details-emerge.607699.0.html