Alright going to cover some quick things for the BETA release if you were signed up for the fall dashboard.
AP2.5/6 Titles seem to have been updated again, do not play any burnt copies of Anti-piracy games. Will result in the error below. Retail Discs should boot fine.
XGD3 backups booting fine. XGD3 originals booting fine.
Drive Firmware is not effected.
Lite-on 02510C - Not effected
BenQ 0442 - Not effected
Lite-on 0225 - not effected.
Firmware is not updated for drives.
*NOTE: Firmware or additional checks may have been put in place to check for flashed consoles recommendation for you if you care about your console, flash to stock then update and don't play backups until more information is out.
That's all I know as of now, if you have more information post below for others interested to read.