It opened the afternoon of the 4th I think. We skied the Great One on the 5th and it was pretty fun, but the lower section was already gone on the right side. There should still be plenty of skiing to be had for a while though.
Just bring rock skis, all the debris from the entire season sits right on top of the snowpack in the summer. You'll have to walk a couple short sections from the bottom of the couloir, but nothing gnarly. Then you have the fun little hike back to the lake.