OK, so there's good news and bad news.
Bad news first - the -C part does indeed still suffer from glare as
@Seminole found out.
Although the PCB on the camera was redesigned and those 3 via holes were eliminated (which I wrongly assumed would fix the probem) there is still light entering the back of the camera sensor. The glue bonding the camera to the board is still translucent and letting enough light in to be a problem.
It's not as bad as the holes, but still too bad IMO.
View attachment 762222
Looking at
@Seminole's photo, the orange glare is mainly at the top of the picture, which is the same as the older cameras where the 3 holes were and where the tape was applied at the factory to fix it.
View attachment 762224
So the good news is that to repair these -C repeaters, you should only need to drill one hole in the housing and put some paint/black silicone etc. along the top of the camera where I've ringed it. So an easier fix but obviously not what a lot of you will want to do.
So yes I think the -D repeaters are going to be the only ones we can say 100% won't have glare. Many service centres will have -C repeaters in stock right now, so even if they agree to replace them under warranty you could end up with another pair of cameras with glare, albeit slightly less than the older ones.