"Errors occurred: no packages were upgraded"?

[cscs]

pacnew is a file type. Ones that require manual intervention.
As stated above … do the following to print them:

pacdiff -o

@cscs

The way I deal with them is:

pacdiff -s 

which will properly pass sudoedit to my DIFFPROG which is set to meld.

IF you havent set the DIFFPROG env var … then you can use something like:

DIFFPROG=meld pacdiff -s

OR
If you want something that will give you a presumptuous GUI you can install and use

manjaro-pacnew-checker

For more info:
pacman/Pacnew and Pacsave - ArchWiki