Lots of development coming from ETC Labs Core

https://github.com/etclabscore/ECIPs/blob/master/ECIPs/ECIP-1054.md

https://github.com/open-rpc

Community building with The Ethereum Classic Show - https://www.youtube.com/channel/UCiiRaAc9ad3qgdi0ycmp_TA

And everyone's favorite guys, Ethernode, were part of the ETCLabs accelerator (if you don't know about them, you have to check them out. First hardware node for ETC and ETH)