Cyanogen Inc. have now decided to pull the plug on the infrastructure behind CyanogenMod despite having previously stated they would continue to support the development of the community driven OS. Founder Steve Kondik seems has left Cyngn as well, so there was little chance the Mod Project was going to survive after that.
Consequently it now has a new name (Lineage - see the github link at the end of the article), and very soon hopefully new infrastructure to continue the project with.
It will be interesting to see which developers move to the new project and therefore which phones are still supported. I'm hopeful mine will be but you never know. The developers work on ROMs in their free-time and don't get paid for their efforts.
The forum is already read-only and the last nightly build using the Cyngn servers will be delivered on 31st December 2016 if submitted by developers.
EDIT - I'm grabbing the last snapshot build (13.0 with latest google security patches) before that disappears too. On 31st December if the last nightly (14.1 still a few features missing) is no better than what I have today I guess I'll be going over to the now completely unsupported snapshot. It's still better than the manufacturer's stock ROM.