Given that the first set featured only six songs, there's not a lot of room for "significant" change.
Untethered Angel
A Nightmare to Remember
Fall Into the Light/Paralyzed
Barstool Warrior
In the Presence of Enemies, Part I
Pale Blue Dot
I would assume (and hope) that both ANTR and ITPOE get dropped, and I wouldn't be surprised if FITL/Paralyzed and either Warrior or Dot get dropped. That would give them 35-40-ish minutes to add AWE and S2N and a couple non-DOT tracks. Getting Peruvian Skies or Lie (or, god forbid, both) would be really disappointing for me.