I read that 2022+ 3rd Gen Toyota Tundra Bolt Pattern is 6x139.7 (mm) or 6x5.5 (in) and that the previous generation was 5×150 wheels. Is this accurate?
Correct. You should also note that the center hub bore is 95mm and lug nut thread size is M14x15. That should have you covered if upgrading your wheels. Are you keeping them stock or going aftermarket?