CyanogenMod had announced a few days ago that it would be bringing the CyanogenMod 13 update to several devices well before the year is out. CM 13 is basically CyanogenMod based on Android 6.0 Lollipop and brings pretty much everything that you would have seen on stock Marshmallow devices. Features like Doze and Tap on Now are included on CM 13. The set of devices that will be receiving the first build of CM 13 is fairly limited to start with and that is understandable. More devices are expected to be added over the period of time.
For now though, the first set of devices that will be receiving the build of CM 13 will include: OnePlus One, Google Nexus 7, LG G4, Samsung Galaxy Tab Pro 8.4 (mondrianwifi), LG GPad 7.0, LG G3 Verizon and Motorola Moto X 2014 variant. It is good to see that OnePlus is still supporting the original OnePlus One, a device that was initially made to be an exclusive CyanogenMod running device. Post the controversy, OnePlus moved to Oxygen ROM which users could flash on the OnePlus One. But, Cyanogen has continued to support the device and will do so with CM 13 too. However, it is not clear whether CM 12 will be made available for the OnePlus Two yet. You can go ahead and dirty install the CM 13 update both on Samsung Galaxy Tab Pro 8.4 and OnePlus, while the ROM for other devices will be made available in due time.
The Following is what CyanogenMod has advised the users before flashing CM 13:
If you are on CM 12.1 YOG4P or CM 12.1 YOG7D releases, we recommend you stay on course with the SNAPSHOT release channel and not jump to nightlies unless you are willing to accept a dip in quality. Our stable branches are vetted, CTS run and (in some cases) shipped on retail devices – which means the quality of those branches is far and above that of nightlies. We’d advise these folks to stay on the SNAPSHOT train, and we’ll have a quality approved SNAPSHOT for CM13 sometime Jan.
If you are on a 12.1 nightly, you can ‘dirty flash’ CM13 (read update like any sane person) as long as you also update your third party addons in the same pass. This means, if you use Xposed, OpenGapps, etc. flash a Marshmallow compatible version of them immediately after your CM13 flash.
If you have taken any unofficial, XDA or self made builds of the CM13 source code, we’d advise you to wipe upon coming to our official nightlies as we cannot ensure upgrade compatibility with third party distributions. Of course, you are welcome to not heed our suggestion, but don’t blame us if something goes sideways.