retextjs/retext is a JavaScript framework that processes natural language through plugins. The latest confirmed release is 9.0.0. The provided information does not list what changed in this version, so no specific update can be asserted. The project is part of the @unifiedjs collective and provides a foundation for analyzing and correcting natural-language text.
retext handles natural language as structured data in the form of a CST (concrete syntax tree). Plugins inspect or modify this tree, which can be used for spell checking, punctuation correction and readability checks. The repository is a monorepo that includes retext-dutch, retext-english, retext-latin, retext-stringify and the retext programmatic interface. It is released under the MIT license and its primary language is JavaScript. So the core is not a finished single corrector but a framework that composes natural-language processing tasks by wiring plugins together.
The provided information contains no changelog or performance comparison data for 9.0.0. Therefore it cannot be determined what features this release adds or improves. Within what can be confirmed, it is a foundation for composing natural-language analysis and correction plugins, and the results or quality of individual checks cannot be evaluated from this information alone.