Is there really any reason for a new version? This miner has been relatively stable for years since its original launch. Most versions are small updates or with some added features like the RX boost and what-not.

However its not really possible to get any faster speeds on ETH algo. Pretty much the original ethminer from the ETH mainnet launch gets a similiar speed as Claymore. Sure it doesn't have dual-mine mode and doesn't crash when a new DAG is switched but there really can't be any large speed improvements of this algo.

And right now mining is very unprofitable that most people kept their rigs offline and are waiting for ETH to go to like $400 or at least a ProgPOW push by the ETH devs.