Cyanogen recommends to do a full wipe of your device before installing CyanogenMod 13. And at the same time, if you want stability, you may want to wait because the current nightly builds will not be able to give you comfort, which ensures a stable CM12 branch.
seven new devices officially got support of CyanogenMod 13. The freshest version of the firmware based on Android 6.0 Marshmallow. In the list of the following devices: OnePlus One, Nexus 7, LG G4, Samsung Galaxy Tab Pro 8.4, LG G Pad 7.0, Verizon LG G3 and Motorola Moto X 2014. In the future the Park of devices will only expand.