Early 2023.
AMD and Intel (as well as others) have some time to revise their roadmaps to take this new player into account.
I think Intel has been way too complacent sitting on their laurels.
If you think only AMD was offering competition, now we can see both Apple and NVidia taking shots.
For anything that doesn't require outright x86/AMD64 compatibility, these new processors offer a very competitive option.
And (at least) the Apple Silicon has proven to be competitive even taking x86/AMD64 compatibility into account, if they would ever consider licensing or selling processing units outside of their own machines.