This Week In Neovim is a hand-crafted weekly newsletter gathering everything that has happened in the past week around Neovim Core and in the Neovim Plugin ecosystem. Each weekly news is then separated into two main categories: Core and Plugins.
The Core part is about the changes in Neovim itself, whether it is about the nightly (main development branch) or the public stable release.
The Plugin part is the result of skimming main communication sources, such as Reddit, various GitHub projects, embedded help Neovim manuals and others. It is also a contribution-based process where people can open PRs and issues to contribute their findings.
More on all that in the contributing section.