I want to second the idea that adding Boost or Barrel Roll is probably not the best. Sure, everybody wants to give it Barrel Roll so it doesn't look like the T-70, but guess what? Give it a Barrell Roll and it will look just too much like the TIE fighter from wave 1 era. I think there are ways to get around it.
Honestly, I think we'll see a title, but I have no idea what it could be. I also think we'll receive some more Astromech droids. Can you imagine a droid that gives you a free Evade action if you perform a white maneuver? It will fly very differently from R2-D2 X-wings or R2 Astromech X-wings.
It may also be some brand new mechanic we've never seen before. At any rate, I highly doubt it will be a dual upgrade card (though that Stutter Fire/Linked Fire makes perfect sense to decide at the beginning of a match, and I really like it).