This sounds like what it should have been Nuendo 6.0, but it’s great to know that Steinberg is working hard fixing things. But there are some very important areas not covered by this update:
Is AAF support abandoned? I have some serious issues with AAF, for example, I can’t archive a project using AAF audio sources, or apply an offline effect to a AAF imported audio without bouncing it first.
What about the video output driver issue? And the Blackmagic support?