Still no HDR.
We can only hope that when the game eventually gets re released on next gen consoles, a "remastered" edition comes to PC, with support for HDR at least.
I can foresee there being a big remaster at some point. It's just too monumental of a game not to get one, I think. At that point, who knows?
For now, though, as has already been officially confirmed: no plans for HDR on PC.