Cinema Blend says"
This summer superheroes go retro, with the first two comic book movies ever to be set in a time period that isn’t the modern era. X-Men: First Class looks like it’s set right around the time Austin Powers was first frozen, and Captain America: The First Avenger is set during World War II. If there’s a sequel though, don’t expect him to stay in the past. Chris Evans has confirmed what we already assumed to be so: Cap is headed into the future.