prash  filed a request to merge kdiff3-kf5-git  into kdiff3-git :
KDiff3 upstream has been changed to use kf5 by default. It is redundant to indicate kf5 in the package name. Eventually, when extra/kdiff3 gets updated to use kf5 after an official release, kdiff3-git will remain the corresponding git version on AUR.
Request #13331 has been accepted by coderobe .