Gordon,
Steve C. is correct. I spoke with the permit office today. The end result was a little confusing, but as far as I can tell, the permit office will no longer be open on the weekends, but the Lone Pine office will still have normal hours. If you expect to come after hours, they will leave the permit in the night box. You need to let them know this during office hours. I too am planning a hike (maybe not a full summit - conditions will dictate) on Sunday. But, may change my Sunday day permit to a Saturday overnight permit. They indicated they had several now due to cancellations. Glad there will some other people on the trail.