Yes there are leaks.
No you wont likely see them.
The rarer the set the more valuable.
Its the reason theres no Alexandra Daddario, Kate Beckinsale or Anna Kendrick sets out there the guys that have it hoard it like its water in the desert. You votta pry it outta their dead hands.
Maybe one or two previews will leak or someone with half a set will feel compassionate but the real stuff will not be seen unless theres another fappening.