Only one fix from 12.11 and no known issues resolved:
Complete changelog below and I've applied it to a 3 node stack of MS210s to see how it fares.
I applied it to the ms220 that was experiencing port speed issues with an MR55 when I tried 12.10 here:
It appears that this is another fix, although not listed.
And 12.13 has now been released. Looks like a MS390 bug fix is the only change.
Im seeing MS390 stack members may not report client-level detail on the 11.3. Be good if they can fix it as im starting to wish we purchased 9300s.