IT HAS ARRIVED!!!!!eleventy-one!!!!!!
I just played Fallout 4 for about 15 minutes at 4K with everything set to ultra and the little lights on the top of the GPU were still blue and the frame rate was a rock steady 60FPS (Fallout 4 is frame limited to 60).
I'm a bit confused that when I see the gameplay of others on YouTube with Fallout 4 their temps are a lot higher and the fps is somewhat lower at that resolution and ultra settings.