Evidently no one else has seen the updated lenses. I took the 35-90 flying a few nights back, the extra speed did help, but the light was shifting and I was back around 1/400th before long. The orange square 50-110mm and 24mm are both in stock at my local rental shop, so I'll be checking on them.
The next project is to do some testing with regard to studio lights and triggers, and getting flash sync at 1/1000th on H4/H5 bodies and 1/2000th on the H6.