There's a rumor that "Toy Story 4" has been officially announced by Disney and Pixar.
1. Pixar's slate is full for several years.
2. Pixar just doesn't operate this way.
3. Pixar's been burned by this kind of thing before.
4. The news came from an unconfirmed tweet, for goodness' sake.
Twenty-one months later, Disney's CEO Bob Iger officially announced that Pixar is indeed making Toy Story 4.