There was a time in Pixar's history wherein they were completetly devoted to original stories rather than continuing established ones with sequels. In the first ten years of the animation studios' existence, the only sequel produced was
Toy Story 2. Things have evidently changed a lot since then.
Only three of Pixar's most recent ten films have been original, the other seven being sequels or prequels. Another is coming up in
Toy Story 4. However, beyond that upcoming fourth instalment in the
Toy Story franchise, it seems that Pixar will be reverting back to their old ways.
Mark Nielsen (a producer of
Toy Story 4) recently told
The Hollywood Reporter, that with Pete Doctor taking over as the head of Pixar the studio will begin to focus on original stories again rather than follow-ups.
"He's really looking out for the new voices and really loading up the development pool. It's all original films after this one right now."
Currently, our knowledge of Pixar's future is that next year will see the release of Dan Scanlon's
Onward (starring Tom Holland and Chris Pratt) and that there are another four projects slated to be releasing over the next three years. One of these projects will likely be directed by Domee Shi (the director behind, Oscar-winning short,
Bao).
Toy Story 4 will be releasing in theatres on June 21st, 2019.