Samsung Galaxy S9 and Galaxy S9+ can now boot official TWRP
Check out the Night Theme in Samsung Experience 10 for the Galaxy S9
Custom ROM brings One UI 4.1 to Galaxy S9 and Note 9
Samsung Galaxy S9 smartphone images leaked by MWC app - BBC News
This is Noble rom, an android 12 custom rom for the Galaxy Note 9 and S9 by AlexisXDA on XDA. It has some bugs but nothing that's deal breaker, some stuff have