Director James Cameron has already confirmed that Stephen Lang will be returning for the the three planned sequels to his 2009 megahit Avatar, and now comes word that the original’s leads have been secured as well.

It’s being reported that both Sam Worthington, who plays Jake Sully, and Zoe Saldana, who plays Neytiri, have finalized their deals to return for Avatar 2, Avatar 3, and Avatar 4.

Director James Cameron says Stephen Lang, the actor who played Colonel Miles Quaritch in 2009’s Avatar, will return for the sequels. All three of them, which Cameron plans to shoot together and begin releasing in 2016.

Quaritch is one of the villains in the original movie who leads the private security team tasked with protecting and clearing the way for the company mining valuable natural resources from the moon named Pandora, which causes damage to the lands of the Na’vi, a humanoid species that makes their home on the moon.

The Journey Into Imagineering exhibit at this year’s D23 Expo in Anaheim, CA, takes attendees into the various components of Walt Disney Imagineering. Past, present and future are all covered inside this massive venue, flooding with artistry and the artists who have made them a reality. Each area of the exhibit features Imagineers, many of whom have worked on projects, including the recent Disney California Adventure theme park expansion.

Check out our photo gallery here below from the exhibit, which includes perhaps the “geekiest” touches one could appreciate: hints of Marvel, Avatar, and Star Wars making their way to the Walt Disney Parks and Resorts!

Captain America greeted his legions of fans in the Marvel Academy-themed space. The concept art on the walls depict a future kids club area of the Disney Magic ship aboard Disney Cruise Line. “The First Avenger” will be appearing soon, and made his inaugural Disney experience at D23 Expo. Salute to the Captain!

James Cameron wrote and directed 2009’s Avatar, which would go on to become the biggest box office movie of all time, so you would expect him to also write and direct the long awaited sequel, Avatar 2. But it appears that Cameron will instead have others pen the follow-up, or at least work with him in crafting a draft or two.

According to a source close to Fox, Cameron has brought in Josh Friedman to work on the script for the sequel. Friedman created the Fox TV series Terminator: The Sarah Connor Chronicles—based on the Terminator movie franchise, of which Cameron directed the first two installments — and has also worked on the screenplays for Steven Spielberg’s War of the Worlds and The Black Dahlia, as well as the teleplay for the Locke & Key series that never came to be.

Just in case you were wondering, Avatar 2 and Avatar 3 are still in development, or lack thereof. Director James Cameron has promised that the first sequel to the top box office grossing film will take us to the oceans of Pandora. It’s an environment that Cameron is clearly fond of; his deep sea exploration of Mariana’s Trench shows just how passionate the director is.

The underwater setting does have its complications though. Getting the characters to interact with the underwater environment the way he wants to is one of the biggest problems. But film producer Jon Landau believes that he has found a way to overcome that problem. Rather than simulate scenes in the oceans without actually capturing the actor’s experience of them being underwater, Landau confirms that they will use the motion-capture technology in a tank.