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This release was created by a community of maintainers, thanks to the Jupyter Book community for all of their support of the project! Check out the release notes above for a list of the people that contributed to each release. 🎉

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It also standardizes and improves the behavior of links so that interactive, external, and internal links now have distinct and consistent styles so that your readers know what to expect.

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This release brings more control over *concurrent execution* of notebook content as part of this build process. This allows you to define the number of simultaneous executions when your book builds to ensure they occur more sequentially, or reduce bugs if notebooks spawn their own parallel processes

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Release mystmd@1.8.0 · jupyter-book/mystmd

We're proud to announce a new release of the Jupyter Book stack! This brings in a number of fixes and UI improvements! Check out release notes for each here: mystmd 1.8: github.com/jupyter-book... myst-theme 1.1: github.com/jupyter-book... jupyter-book 2.1.1: github.com/jupyter-book...

github.com

This brings in new functionality for execution concurrency, allowing you to control how many notebooks are executed in parallel during build in case you have notebooks that depend on one another or...

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jupyterbook.org @jupyterbook.org · 14/01/2026

The page-last-updated plugin is a MyST plugin to make it clear to readers when your content was updated on each page. Here's a little post about how it works and where to learn about more plugins like it! blog.jupyterbook.org/posts/2026/p...

Introducing the `page-last-updated` plugin - Jupyter Book: Blog

jupyterbook.org @jupyterbook.org · 17/12/2025

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This lays the foundation for building more enriched and precise workflows around notebook outputs. We now treat *each output* from a cell independently, laying a foundation to enable things like generating labels with notebook cells. Here's a PR to follow along: github.com/jupyter-book...

github.com

✍️ Parse Markdown and LaTeX outputs into AST by agoose77 · Pull Request #1961 · jupyter-book/mystmd

This PR closes #2114 by parsing Markdown and LaTeX outputs into the MyST AST. NotePart of initiative #1026 We skip the following transforms: importMdastFromJson includeFilesTransform rawDirective...

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jupyterbook.org @jupyterbook.org · 17/12/2025

The Jupyter Book team has been working hard on a big foundational improvement to how notebook outputs are represented in MyST documents. Steve writes about this change and what it means in this post: blog.jupyterbook.org/posts/2025-1...

Jupyter Book V3 AST: Better Output Handling and Future Possibilities - Jupyter Book: Blog

jupyterbook.org @jupyterbook.org · 07/11/2025

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Reposted by @jupyterbook.org

We recently pushed Jupyter Book 2, which was a breaking change for many of our users! We considered publishing a completely different package (e.g., `jupyter-book2`) but decided against it. Here's a quick rationale why:

Why we made a major release for Jupyter Book 2 instead of creating a new package - Jupyter Book: Blog

jupyterbook.org @jupyterbook.org · 07/11/2025

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Why we made a major release for Jupyter Book 2 instead of creating a new package - Jupyter Book: Blog