I have HDR enabled in the win11 settings and I did get the HDR button in the video options when I started the final release. It only works in DX11 just as in the EA, at least for me. It works perfect and the game looks just awesome!!
I have a LG 34GN850 ,3070 RTX and AMD Ryzen 9 5900X 12-Core Processor. It work perfect with everything on max.