This is google system update, what is in it have a look at it,
Security patches generally contain kernel-level fixes that have upstream patches coming directly from Linux development. It can’t be touched by the Google Play System Update. So that was all about the new Google Play System Update that has been significantly upgraded from Android 10 to 11. Again, just like Project Treble, it does not appear a huge change at the user’s end, but it’s surely a paradigm shift. You will get instant bug fixes that were otherwise unknown to you, making your experience better and cohesive
