The contents of the box are not a mystery, only your chances of getting certain items.
All the boxes come with a POP! 3-pack and two mystery minis. The POPs! are Donald, Goofy, and decked out on their Tron gear. The one in six chase has all three glow in the dark.
You can look for boxes in stores now or order them online here. You can also check out the unboxing video below.