Fox ended its CinemaCon presentation in Las Vegas on Thursday with a surprise guest: James Cameron.

The filmmaker announced that there will be four Avatar sequels.

"We have decided to embark on a truly massive cinematic process," the director said.

Cameron explained that he found planning the three sequels limiting, "We began to bump up against the limitations for our art form."

Cameron said each of the four sequels will be stand-alone movies plot wise but will together create a saga. His goal is to release Avatar 2 for Christmas 2018. The plan is to then release a new film in 2020, 2022 and 2023.

"I've been working the last couple of years with a team of four top screenwriters," Cameron said, "to design the world of Avatar going forward: The characters, the creatures, the environment, the new cultures."

"So together, we're going to continue to make this industry the greatest show on earth," Cameron continued, "That's what we do."

It sounds like it's going to be a cinematic saga of epic proportions!