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Following July's tragic Aurora, Colorado theater shooting, Warner Brothers postponed the September 7 release of Gangster Squad out of sensitivity given the fact one of it's standout set-pieces was a violent scene set in a movie theater.

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The film underwent reshoots to omit the scene in question, and is now set to hit theaters on January 11, 2013.

To begin re-hyping Gangster Squad, a new behind-the-scenes featurette has been released, revealing the high expectations Ruben Fleischer's cast has for this mob drama.

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"This is the first big gangster movie for the new generation," Anthony Mackie says, with Giovanni Ribisi adding, "It's taking gangster films to the next level." The director goes on to reveal just how lofty his expectations for this film are: "Every generation has their iconic gangster film and we hope this will be the next one."

The 1949-set film, which sees a ruthless mob boss (played by Sean Penn) going up against an elite anti-mob enforcement squad (led by Josh Brolin) in Los Angeles, opens on January 11, 2013.