Yes, that's true. I was cautious to say "in my case" the timetable won't change much, and I stand by this, since the lineup is so good that it will be very difficult to find gaps where there is not already something I want to see. But of course in general having the timetable is on the day is pretty bad to discover bands.
Also it is not like the timetable will have many of us rush to book flights tonight to see a clashing band elsewhere.