All information, including troubleshoot guides and notes, are in the Announcement Thread
....Magisk Is A Magic Mask to Alter System Systemless-ly.
1. Boot in to TWRP
2. go to Advanced / File Manager and delete folder named supersu
3. go to Advanced / Terminal and enter these two commands
The first one forces systemless, the second prevents /su/xbin_bind from existing.4. Flashed Beta SuperSu 2.74-2 (we can notice while flashing this zip after the above script, we will not see the line saying "Disabling OTA". Also, end of flashing it warns that it takes longer time to boot.