And AFAIK they didn't really get any takers there either because it didn't really make sense. I think ARM was hoping for a market of large legacy codebases (think cell modems) where the heavy hard realtime work had been migrated to fixed function IP blocks, DSPs, etc. years ago, but the vendor didn't want to spend the time migrating their RTOS to ARM-A from ARM-R for the intermittent, non realtime, but still compute intensive work. You can sort of see how they didn't get any uptake with how the marketing changed pretty heavily with the R82 towards storage vendors instead of 5G. And RISCV doesn't have even the hope of that network effect to bank on.

I'd also expect features like per core TCM if this core was targeting ARM-R niches to at least break away from the non determinism of the memory hierarchy (particularly a multi core memory hierarchy!), but I don't see that here.