Amlogic S905X and S912 Boxes can do 4K / HDR with Libre Elec and with it's successor the Core Elec. (However it's still unclear if S905X does native 10bit output or just refined from 8bit to 10bit with dithering. Reportedly S912 HAS proper, native 10bit output, but it's just came just as reliable in overall terms with the latest CE as the S905X was on LE. And as far as I'm informed the latest CE also missing the 4K 10bit output option somehow. However it's still in development (the LE is not anymore on these SOCs) and who knows what they would refine next. And there's still the OSMC for S905X, which reported to have proper 10bit (if I'm not mistaking) , but only with manual switching (at the moment). I'm keeping my eye on them for sure...)
However: neither will do Full-HD 3D MVC, only in half-res.