Update went fine. Thanks. 
Did a lot of prep work/house cleaning 
beforehand though. Removed orphans and some AUR software and uninstalled the old 6.1 LTS kernel. Also logged-out of GNOME, switched to a virtual terminal, stopped GNOME with sudo systemctl stop gdm and then sudo pacman -Syu followed by pamac update –aur.
The only thing that came up after rebooting was the btrfsmaintenance warning.
warning: btrfsmaintenance: local (1:0.5.2-1) is newer than extra (0.5.2-2)
Found a discussion on it and sudo pacman -Syuu finally got rid of it by downgrading.
EDIT: Unfortunately the new Liferea 1.16.5 is messed up on Wayland now. Messed up layout, window sizes, … Really have to wait for a future GTK4 version or find a better RSS reader. Even coredumped on me once.