Do people really think there is really any difference in AutoPilot? I'm fairly confident mine drives today exactly the same as it did in late 2019 when Tesla shifted their efforts to the rewrite. Drive the same road with the sun in a different position, different weather, cleaner cameras, different traffic and you can see different results.
Back when it was the current version the changes we saw with update were far more noticeable, for example moving over in lanes when passing lorries, changes to how it kept within EU regs for lane changing etc.
I don't think it'll change at all here in the UK until regs exist for it to do something else. That's meant to be before the end of the year that L3 automation is allowed at slow speeds on motorways, and clearly Tesla are pretty much required to take part.