HDR10+ uses dynamic metadata like Dolby Vision will we see it in projectors?

[KcMsterpce]

I can't say for sure, but I'd wager "no".

DV adjusts based on the display's capabilities. Too many variables with projector setups at home means that DV isn't certifiable for home use.
A movie theater can have DV, because it is a controlled environment, with specific projectors, and a known screen size for that room. Thus, DV can be calibrated to match those specifications.

However, at home, you can have a totally dark room with white walls, or dark room with black walls; lights on at any point; more lumens required at 150" versus at 50"; .8 gain screen or a 1.5 gain screen; black diamond screen, white, grey, or HC grey screen, so on and so on... DV won't look the same if any of these conditions are changed, thus, no DV for home projectors.
That's how I understand it.