In case anyone needed the information Monero will be forking on October 18th to their new pow method.  Mining algo has slight changes so miner software must be updated.  XMR-STAK doesn't have a release but the master copy on github can currently be compiled for testing.  Other miners also have test forks available for compile. 

Relevent information in articles. 

https://bitcoinexchangeguide.com/monero-schedules-xmr-protocol-upgrade-for-october-18-in-v0-13-hard-fork/

https://getmonero.org/resources/roadmap/