Austin Towers
TS Member
Looks like you can already buy a 2020 season pass online, for £48. Although Alton Towers seem to be confused as to what year they are selling.
It seems the Scarefest and Fireworks dates for 2020 have already been set.
I've came to the conclusion that they know people may not have a great day out due to queues etc so they price their product accordingly.