Let me know if what @Danlav313 (Thanks for the help!) wrote is what you were looking for. Also some 3rd party apps may still have some compatibility problems with the new binary, so they might not be fully supported yet 😕.
@Tee20 Go "back" one. You're on the settigns for "General notifications" for messages, but if you go back a screen for the notifications settings for Messages, there'll be "Show notifications" at the top, then a section for "Conversations" - tap "Show as bubbles" then choose "All" or "Selected only".