I had both the Oculus and the 4K IPD-adjusted, so everything was sharp, no cross-imaging, both HMD's perfect. Nevertheless, I got motion-sick in the Rift, almost not in the 4K. And meanwhile, since I am used to VR, no problems at all with it any more.
I remember my first longer session in the Rift in December 2016 - it took me also 2-3 days till I recovered completely, I felt so bad I never experienced anything similar with the 4K.
The 8K with 80/90 Hz and 6DOF-tracking will show whether Pimax perhaps uses a completely different technology which avoids motion sickness better (to me); or whether I will get as motion-sick as with the Rift former times...
I agree we won't get much new information in the course of the next 1-2 weeks. Even when using some kind of express mail, it still may take up to 10 days until the last sample reaches its destination, depending on where on the globe it is.
So I agree even further with @GameMaker: The project moves on and has taken its major obstacles already. So I am very confident, the first bakers might get their 8K by August or latest September, as long as their aren't any major issues revealed by the testers. I'v waited from January/February until now - so I can wait for 2-3 further months as well