Novelist and screenwriter Antony Horowtiz has confirmed that he's "just finished writing the new Tintin film for Steven Spielberg." Spielberg is producing the CG animated movie with Peter Jackson slated to direct.
Horowtiz didn't go into detail about which of the books will be adapted, though the best guess remains "The Seven Crystal Balls"/"Prisoners of the Sun".
In other sequel news, "G.I. Joe Retaliation" director Jon M. Chu has confirmed that his plans to direct a film based on the 1980s cartoon "Jem and the Holograms" will take place BEFORE he gets to direct the third film in the "G.I. Joe" film franchise.
Chu says the reason for this is the script for the third 'Joe' is taking a little longer than expected to come together. Chu tweeted: "Joe script is getting REALLY fun just taking alittle longer.I need it 2b perfect so decided 2try &fit a crazylittle movie [Jem] in."