At the end of Captain America: Civil War, Steve Rogers gave up his shield to Iron Man after an intensely personal battle that left their relationship in broken pieces. This has made fans ponder Rogers' identity for Avengers: Infinity War, with a few hints from Cap's actor Chris Evans and Sebastian "Winter Soldier" Stan that he would be calling himself Nomad like he did in the comics for a short while.
Evans and Stan continued their teasing by signing a fan's Captain America shield. Like previous teases, their autographs hinted at Rogers' identity change to Nomad. Interestingly, Evans wrote "Cap Nomad," while Stan wrote, "I'm with Nomad." If anything else, this is a unique way to tease a new identity for the WWII hero.
Rogers took the Nomad identity after the classic Secret Empire story by Steve Englehart, which is different from the controversial event that had him as the main villain. In this story, Rogers found out that President Reagan was in charge of the Serpent Society and was disillusioned with his country. Knowing that the world needed him, he adopted the name Nomad, the Man with No Country. It didn't last too long, though others would take up the identity when Rogers reverted back to Captain America.
Avengers: Infinity War is slated for a May 4, 2018, release. The unnamed Avengers 4 comes out on May 3, 2019.