No one knows for sure but I do imagine the M2 will have better cores (and potentially a couple more graphics cores) while the M1 Pro and Max will have more cores of the M1 variety. I wouldn’t expect those to get updated until next year, though you never know.
I’d say if you can wait then do so because I’ve heard conflicting rumours as to whether the M2 MacBook Air or 13” Pro will get the fancier display.