It is (slightly) disappointing RISC-V didn't make it as an officially supported platform in this release.
Hopefully we won't have to wait for next major release before that support gets integrated.
It used to be that NetBSD was among the 1st (if not the 1st) to hop onto a new platform. Along with smaller OSes like some RTOS or Forth-based systems. But that hasn't been true for a long time - nowadays Linux usually gets there first.
That said: it's very impressive what NetBSD manages to do & support, given its relatively small user- and developer community. Kudoz to everyone involved!