Yes, you are right.
I tested a lot of build of LibreElec, OpenElec, and even the newest CoreElec, and I must say that the version 8.2.5 Chroma 422 10bit build for the S905X from @wrxtasy is the best out of them all.
Stable and fast, 4K works without any problems, Dolby TrueHD and DTS HD Master no problem + the HDR is properly displayed, (on CoreELEC Kodi 18 colours are little washed out) and on wrxtasy build its looking as it should and use full potential of my TV.
The thing is that it seems that there is no new updates, as there is Kodi 18, all I really want is to update kodi version to 18 and thats all, as all the patches already included are perfectly fine (at least for S905X SoC)