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The Wikipedia article on Ido states that there have been almost no official changes to the Ido language since 1922. But Ido has a small speech community, and therefore there may be unofficial changes ...
Belter Creole is a conlang creole spoken in the novel series The Expanse by James S. A. Corey. When the novel was adapted into a TV series they got linguist Nick Farmer to develop the language.