It is still a rumor and should be treated as that, but AMD might be introducing XT versions of some of their processors in the Ryzen 3000 product family. There's been some chatter about a refresh in ...
still the 'rumors' take with salt warning...but:
RYZEN 9 3900XT - 4.1GHz base, 4.8GHz boost.
RYZEN 7 3800XT - 4.2GHz base, 4.7GHz boost.
RYZEN 5 3600XT - 4.0GHz base, 4.7GHz boost.
RYZEN 9 3900XT - +300MHz base, +200MHz boost.
RYZEN 7 3800XT - +300MHz base, +200MHz boost.
RYZEN 5 3600XT - +200MHz base, +300MHz boost.