Songbird being in the Avengers: Infinity War wave (1st one) is confirmed by Dwight Stal. I'm putting my money on Gambit being revealed today as a definite with Psylocke also in the mix (Gambit was brought up in casual conversation and Dwight while not acknowledging anything, kept clowning about how they definitely have trenchcoats. I know that's not much to go on, but after chopping it up with Dwight and the rest of the design team for 6 years running, you learn to pick up on the subtle clues the drop). I don't know if they're tackling the Beast yet ( I don't know if they think they can compete with the Toybiz version and they take that challenge very seriously. They ask all the time how some of their redos stack against TB). What IS apparent is they're going through the 90's Jim Lee/Blue team squad 1st so I don't think we'll be seeing the likes of Storm, Bishop, Colossus(in 90's gear), or Nightcrawler yet...but I've been wrong before! Tony asked me to guess what character will be the BAF for the Deadpool wave. The only hint he gave was it's a character tied to both X-Men and Deadpool. During our conversation, I brought up Captain Marvel long range and said the BAF should be Sasquatch. Both Dwight and Tony both kinda went "WHOA" on me. I'm telling you all this because even though my default pick will always be Sauron, I'm going with Sasquatch as my pick. Both are tied to the X-Men. Both are Canadian. That's my pick.
PS: Since we always get a Wolverine, I'm thinking we finally get an "in scale" Tiger striper this go round.
Maybe X-23 in her current suit for the Wolverine?