If you already have the pacnew files, you updated in the meantime. For this package and instance, it is safe to fully accept the pacnew files as shown in the announcement.
I did not run this UPdate so far; so I checked my manjaro-release and have 26.1.1-1 and not 26.1.2-1 which comes with the UPdate.
SO: Overwrte now or later?