Official Lineage OS Nightly and Experimental Builds are Available for Many Devices.

Lineage OS 14.1 official nightly and experiments builds are now released on 22 Jan 2017 available for Download for many devices 80+ including Google, Motorola, Nextbit, Oneplus, Samsung, Sony and Xiaomi. The Official Build are started spawning on official linage os download website.

So far, there are builds for the Nexus 6P (angler), Nexus 5X (bullhead), Moto G4 and G4 Plus (athene), Nextbit Robin (ether), and Xiaomi Redmi 1S (armani),Moto E (condor), Samsung Galaxy S3. Click here to download official lineage os rom for your device. The builds are called lineage, instead of cm, and tagged with the same build number system as CyanogenMod's (14.1 stands for Nougat 7.1 and 13.0 stands for Marshmallow 6.0). 

Some builds are labeled as "experimental," these should be flashable on top of CM13 or CM14.1 builds for those who don't want to wipe clean and get started again.

More devices are slated to be supported, you can check the full list of build targets here. And to see and grab the released builds, you have to head over to download.lineageos.org. Release candidates will com every week and will be signed with a private key. 

Another thing to keep in mind is that by default Lineage OS won't allow root, but the project will provide a separate flashable zip to root lineage os. That doesn't seem to be available yet.