The Galaxy Note 4 is only a few weeks old, but the Sprint variant is already rooted with custom recovery and now we have our first rooted and deodexed rom built by DroidForums member "rhcp011235". This is the Stock Sprint Rom for the Note 4. This has been fully deodexed and root has been added. The rom has been fully zip-aligned, knox has been removed, full busybox has been added, stock boot.img, and there is more to come. John says that this should be installed via TWRP recovery and that once installed you should not restore data from any backups as this will cause issues. Head to the link below for the download.
SprintGalaxyNote4 Deodexed/Rooted