The IMAX trailer for Avengers: Endgame has dropped, and with it has come some more concrete information. After all, because of the different aspect ratio, more can be seen. The number one thing that this trailer does is seemingly confirm that Nebula is with Tony Stark aboard the Benetar.
The new aspect ratio allows us to see more of the face of the person that Nebula touches on the shoulder and it does appear to have some stubble like Tony. Some fans had theorized that it was Steve Rogers, or I had even heard speculation that it was Gamora. Check out the trailer below: