It is starting to be the default for new devices. I think that HDR is here to stay, not because it's ground breaking but because it is easy to implement with new display technologies like OLED or microLED. These technologies provide much better contrast and color reproduction, the HDR part is just the cherry on the top.

One nice side effect of HDR is that it forces the industry to tackle color management head first. This means going beyond sRGB as the default and often only option that had been the norm for decades.