Darth Vader The Mighty
Baronet
maybe is a simple way to correct "mistakes" in the planning of the events and the contents of the box are adapted depending on how the event is received by the players.
E.g. It might give additional upgrades when it was found that too few were achievable for free. Good for the general players on one hand - bad for the players that spend diamonds to get the missing upgrades and finally have an upgrade too much without a use for it.
Also: where did it pop up? in the sidebar?
Yeah, you are probably right. I think not even Inno knows what will be inside atm and they will change it according to event results... (upgrades, selection kits or just some other stuff).