The Adventures of Tintin 2 was originally aiming for a Christmas 2015 release, which has long-since ceased being a realistic goal, with Jackson's commitments extending when it was decided to craft The Hobbit as three, rather than two films.
"Yeah," Bell agreed when we noted that 2015 was now, seemingly, an impossible debut date for the film. "It takes 'em pretty much a year to animate everything, render everything.