HDR already supported?

I got my Apple TV 4K today and connected it to my LG OLED TV. The TV and Apple TV recognize that HDR is possible and activated it.

Infuse is playing every 4K mkv directly and it looks very good and smooth but HDR is not activated even by mkv`s which have included it.

But it seems like Infuse isn`t able to support HDR right now, is that correct?
Will it be a feature in next time?

Thanks for help.

They’ve said they plan on supporting it in 5.5.6, so I’d expect that in a few weeks since 5.5.5 is in testing right now.