Jordan Kerner, who produced The Smurfs and The Smurfs 2, is on board for the new sequel. It isn't known yet if Raja Gosnell will return to direct the third installment.
The Smurfs 2 is bringing back live-action cast members Neil Patrick Harris, Jayma Mays, Sofía Vergara, and Hank Azaria, with voice actors Katy Perry (Smurfette), Jonathan Winters (Papa Smurf), Alan Cumming (Gutsy), Fred Armisen (Brainy), George Lopez (Grouchy), Anton Yelchin (Clumsy), and John Oliver (Vanity Smurf) also returning. It is too early to tell if they will all reprise their roles for The Smurfs 3.
The Smurfs 2 was released July 31st, 2013 and stars Hank Azaria, Neil Patrick Harris, Brendan Gleeson, Jayma Mays, Jacob Tremblay, Nancy O'Dell, Karim Babin, Gaston Howard. The film is directed by Raja Gosnell.