I think they will all be minor going forward, feels like the major improvements have all been made and we'll only see incremental improvements from here on out. Maybe I'm wrong but we'll see.

Yeah. They are aware: "Users will find Opus 4.8 to be a modest but tangible improvement on its predecessor."

Yes, but if version number go up, so do all other number

I think we lack benchmarks that could meaningfully indicate progress. They are mostly garbage that's saturated at this point. God wouldn't score much higher in them.