RE: So what was the purpose of the NDA2 May 2018 08:08
That could be from the technology, its R&D, relationship between MS, FB and their interests.
And one thing which stands out to me, was to disallow any American investor buying up placing as mentioned in RNS. NDA could well be for further developments of EVRH baby products other than MVR.
Release time would have been under NDA and other NDAs to preserve OCULUS more than MVR.