There has been a new study by some seismologists here at the University of Utah showing the "true" extent of the Yellowstone Hotspot. So I figured I would post some of the flurry of news articles covering it.
Electric Yellowstone: Conductivity Image Hints Volcano Plume is Bigger than Thought
Yellowstone Super Volcano Update
Yellowstone Supervolcano bigger than previously thought
Yellowstone Supervolcano More Massive and Frightening Than Imagined
Yellowstone's supervolcano larger than first thought