I know as a fact that those libraries require Kontakt 6 to run and that it is possible to install Kontakt 6 along with the Kontakt 5. My main motive is probably the new 'Play' series of Kontakt libraries that sound and feature-wise seem attractive for my personal style and workflow. With the possibility that Native Instruments will have a summer sale on Komplete updates / upgrades, I was planning to update to Komplete 12.
