The snapshot version is arguably the best kf5-based offering at this point. Fixes bug 579678 and at least part of bug 546494.
Ack, I stay on older slot for pure-qt version, but for kf5, stabling =kde-misc/kdiff3-0.9.98_p20170219-r1 looks like a good idea indeed! Arches, please do your magic, thanks
amd64 stable
x86 stable. Closing.