The Plasma version we ship is basically Plasma 5.3.1 without the version label as we worked very hard to fix various bugs in 5.3 together with KDE Developers before releasing Netrunner 16.
thanks for your answer. Nice to read about your teamwork arround kf5 and plasma.
I’ll try the ppa on my Desktop PC. If there will occure regressions, I’ll open a new thread here with exact description. I think, such info might be useful for your developer team.