I think this goes for any FM3 owner, we're all in the same boat here. I got mine in July 2020 (Europe) and I think US early wait listers got theirs a month or two before. This is still classed as a new model so to see a hardware revision would be painful for existing users UNLESS a new more powerful FM3 Mk II came out with a path for existing users to self upgrade their own models with a simple board upgrade, similar to say a Sequential Circuits Prophet Synth can be updated to double the power with a board purchase. I doubt that would be an option though, very very very slim chance.
I will be honest, if an FM3 Mk II came out early to mid next year with no option for existing FM3 owners to upgrade, I would not be too disappointed as my FM3 is and will always be more than enough for my tonal needs, I will never fully utilise the power and sounds it already has. As we all know here, there are always people here that want more, even if more is not actually needed.