Team CM hasn’t yet officially released any build of
CM13, but the source code for it is already available for anyone to
build unofficial builds.
For the bugs and Stability report of Cm13 rom you can check it on XDA thread here.Follow below step by step guide on How to install CM 13 rom in galaxy Note 3.
1.You must have TWRP recovery in your device.
2.Make Backup of your current rom before flashing this Rom.
3.Before flashing Check bugs from XDA Thread.
4.Any Note 3 model with a Snapdragon Processor.
#How to install Cyanogenmod 13 Rom in Galaxy Note 3
1.Download CM13 Rom for Note 3 and the appropriate Gapps 6.0 package from link given below Copy it in your in your device.
2.Now place the Cyanogenmod 13 rom and gapps 6.0 zip file in sd card.
3.Now reboot to Recovery mode and flash Android marshmallow rom in your device.
4.Then flash CM13 android marshmallow rom and gapps from recovery in it.
5.Now Clear cache and Clear Data.
6.Reboot your device.Done! you just flash cyanogenmod 13 rom in your Note 3.Just wait for 5-6 min and then enjoy android Marshmallow 6.0 rom.