Spoilers ahead (kinda?) for Captain America: Civil War.
With press and fan screenings already underway, it's no surprise that somebody would notice a reported cast member missing among the Captain America: Civil War action.
That would be Gwyneth Paltrow, who played Pepper Potts in the Iron Man trilogy and Marvel's The Avengers. After having missed out on Avengers: Age of Ultron, was rumored to be involved in Civil War, but it turns out that's not actually the case.
According to TheWrap, who confirmed Paltrow's absence in the film's final cut, there's an in-story reason for her absence tied to Iron Man 3.
Marvel's "Captain America: Civil War" finds Steve Rogers leading the newly formed team of Avengers in their continued efforts to safeguard humanity. But after another incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability, headed by a governing body to oversee and direct the team. The new status quo fractures the Avengers, resulting in two camps—one led by Steve Rogers and his desire for the Avengers to remain free to defend humanity without government interference, and the other following Tony Stark's surprising decision to support government oversight and accountability.