Rex, I think I've read that the "early" crews have been on the salt twice already - in the past month or so - to start choosing, surveying, and grading/dragging. June and earlier in July -- to set up the course surfaces and then let nature "cure" them with some hoped-for moisture and sun.
The report says we'll have four courses for SpeedWeek as last year, and that there's a couple of miles of good salt past the 5 on the long course -- with corresponding good shutdown area on the other/shorter courses.
Two weeks from yesterday Nancy and I will be dragging toilets hither and yon on the salt -- I'll give you first-hand reports then.