There is a long, long list of minor updates to GBF so let's get cracking on what's changed (most of these won't affect your gameplay at all)
1) First time clear rewards for certain quests now go to different places.
Treasures and Wonders: now go straight to inventory instead of to crate
Draw tickets: now go to crate instead of straight to inventory
2) The individual members of Ti Icniuhtli Xolotl as summons can no longer be set as level 1 party support summons in the Estimated Damage calculator, since they've never existed at level 1
(we told you these things won't really affect gameplay)
The Special Collab Pass works much like Skyscope missions, and are meant to be very easy. Each mission has a point value, and 1000 points will unlock all rewards. Some missions can be done daily.
More missions will unlock on Feb 9th, when the Persona 5 collab rerun starts.
Part 1 special missions include clearing the Nezha/Twin Elements series of solo quests within 15 turns, as well as the usual set of collab quests.