The delayed ten-disc set will also feature deleted scenes from the previous films, which include Iron Man, Thor, Captain America: The First Avenger, Iron Man 2 and Avengers, according to Entertainment Weekly.
Although no details have been released regarding the teasers, Edgar Wright's Ant-Man test reel - which debuted at San Diego Comic-Con International in July - is expected to be part of the offering.
'Phase Two' will also feature the upcoming movies Iron Man 3, Thor: The Dark World, Captain America: Winter Soldier, Guardians of the Galaxy and Avengers 2.
The box set was originally scheduled for release on September 25, 2012, but was delayed over a legal dispute regarding its silver briefcase design.
Marvel Cinematic Universe: Phase One will arrive on April 2.
Watch the Iron Man 3 teaser trailer below: