I think Alton Towers themselves didn't really know the schedule until very late, as they were busy attempting to make one after the accident.
The ride closures where rumoured back in November last year, they would have planned and sent their park maps to press some time ago. They certainly wanted to get their MAPs and Hotel promotion out of the way before they made any official announcements with regards to the ride line up.
If they have no plans to reopen certain rides and shows this year and the fact that these are not printed on the park map is an indication that they have no plans to re-open these any time this season, then these rides and shows should be removed from the website or should be clearly marked as closed for the season. This information is hidden behind each photo.
Here is a company that is trying to win back the trust of the general public since last years horrific incident. They way they have gone about all this is certainly not going to rebuild any trust with the public again.
I suppose we will have to all wait and see what the 2017 season brings.