When movies film they don't use the actual title so as to try and remain under the radar.
Of course, that never works, but film studios use a production title anyway.
For Captain America 2 "The Winter Soldier," the name that is being used is "Freezerburn."
Now whether or not the title means anything in regards to the movie is highly doubtful, but "Freezerburn" is obviously a play on Captain America being put on ice.
For comparison, the production title for Iron Man 3 is "Caged Heat," with "Thursday Morning" for Thor 2.
Captain America 2 also looks to be filming starting March 1st in LA and Cleveland as well as Washington D.C., if featurefilmcasting.com is anything to go by.
The Russo Bros. are directing Captain America: The Winter Soldier which has an April 4th, 2014 release date and stars Chris Evans.
Head on over to the Cosmic Book News The Avengers Movie Hub for more news, images and trailers.