Just looked this up; Winter Pool: 881.00 feet, currently 912.76
It would seem they have ways to go, down 0.15' from yesterday, at that rate it will take 211 days to reach winter levels.
Years ago I was told that (at least on the lake I asked about) generation depended directly on usage, colder weather means lots more usage and billions of idiotic decorative lights mean more usage, so that was my first though as to why. But, it's possible they just want to jack with the fishermen and boat people.