“Paramount marketing changed the name. They made the title simple. The characters you all remember are exactly the same, and yes they still act like teenagers. Everything you remember, why you liked the characters, is in the movie. This script is being developed by two very smart writers, with one of the original creators of Ninja Turtles. They care VERY MUCH about making this film for the fans. Everyone on this team cares about the fans. Just give them a chance. Jonathan the director, is a major fan of the whole franchise. HE’S NOT GOING TO LET YOU DOWN.
This is in response to the rumor that the title had been shortened. It all started with quotes from Bay last week which revealed that the turtles in the upcoming movie would be of alien origin. Following that quote, Bay responded and so did director Jonathan Liebesman (read here).
Paramount Pictures is planning a December 25, 2013 release for Ninja Turtles.