Yes, Disney is the only one dredging the well for a sequel. Pixar is confirmed to be working on Toy Story 5.
The last film hit in 2019, nine years after the prior entry and with no word or further details this one seems to be years away also. Five years passed between announcement and release last time so we likely have a wait ahead of us but the film is coming and after the last few will likely be seeking to sucker in the kids again before attempting to shatter their parents hearts.
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