{V\'{\i}t Novotn\'y} {Markdown 3: What's new, what's next?} {Plain \TeX, expl3, and Lua provide a common programming environment across different \TeX{} formats. Similarly, the Markdown package for \TeX{} has provided an extensible and format-agnostic markup language for the past seven years. In this talk, I will present the third major release of the Markdown package and the changes it brings compared to version 2.10.0, which I presented at \TUG~2021. In my talk, I will target the three major stakeholders of the Markdown package: 1. Writers will learn about the new elements, which they can type in their Markdown documents. 2. Coders will learn how they can extend Markdown with new elements and how they can style Markdown documents in different \TeX{} formats. 3. Developers will learn about the implementation details of the Markdown package and will have a chance to discuss plans for the future governance and development of the Markdown package. }