There was an organized group top-roping to the left of the Terror Dome wall (where we were climbing). They seemed like new climbers. Apparently, one of the guys decided to boulder a bit without his helmet while waiting his turn to climb. He fell and hit his head, knocking himself unconscious for a few minutes. We were told he was only up a few feet (though his fall sounded higher than that).
At first he wasn't responding but by the time they carried him out on the stretcher he was asking questions. He could move his hands and feet so it seems like it was mostly a head injury (which is probably why they called in the medivac).
Hopefully it was just a concussion and nothing too serious. If anyone has news on him, I would love to know if he's doing OK.