John Lasseter, the head of Pixar, has been quizzed about a potential Toy Story 4.
Tom Hanks had previously said that plans for a fourth installment of the adventures of Buzz, Woody and friends were being "worked on."
Lasseter told BBC Breakfast: "I found that very interesting too. It was really interesting, he carried on talking.
"We haven't announced anything, so I can't really talk about it."
A new short movie, Toy Story: Hawaiian Vacation, will play before the start of Pixar's latest film, Cars 2.
Following that, Pixar will start work on a sequel to the 2003 hit, Monsters Inc., titled Monsters University.
Cars 2 is released on July 22.
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