They held some of the tickets back last year, they don't seem to have done the same this time.
They'll probably be quiet a few opportunities to get tickets next year. There's the deposit deadline of 28th Feb and the last day you can cancel a ticket is 7th May, obviously there will be tickets available after these dates.
Several times during Spring cancelled tickets were made available for only a few hours at a time, I wouldn't be surprisd if the same thing happens next year.You just have to keep a look out.
If that fails, perhaps
this will help.