During a recent interview with The Scotsman, actor Chris Evans talked about playing Captain America for Marvel. He revealed that he actually turned the the role down twice before he took it, and that Marvel originally wanted him for a nine picture deal, which ended up being brought down to six.
The conversation apparently turned to the 1940s sequences in the first film, Captain America: The First Avenger. They then started talking about the period costumes, specifically the army leather jackets created by Aero, the Scottish leather design specialists. They go on to say,
One jacket appears briefly at the start of The Winter Soldier, when former soldier Steve Rogers pays a visit to a present-day Captain America exhibition at the Smithsonian. “They were great jackets” he says enthusiastically. “I loved the fit and the look. One of them may even have come home with me.” And then he mentions that he’s just been measured up for another period jacket for his next Avengers film. Does that suggest the Captain will return to his past in the The Avengers: Age Of Ultron? Evans looks briefly agonised, realising that he might be confirming an unauthorised plot detail ahead of that film’s 2015 release. “Maybe,” he says coyly.
It's always fun getting more backstory on Steve Rogers, and it will be interesting to see where they go with it in Avengers: Age of Ultron. Of course it might not be a big deal, maybe he will just be wearing the vintage period jacket in modern times. It's just an interesting little tidbit I thought I'd share.