In tree for long enough, and it does not seem as if there will be another kdelibs4-based release. At least this gets us rid of kdelibs[plasma] dependency.
x86 stopped stabilization due to bug 640846. Please tell x86 how to proceed.
We won't just stop stabilisation but also mask slot 4, since there is another issue in bug 639960 and no one is going to fix. Also bug 635816.