# Release 26.11 (2026.11/??) {#sec-release-26.11}

## Highlights {#sec-release-26.11-highlights}

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- The {file}`nixexprs.tar.xz` tarball will be discontinued together with Nixpkgs
  27.05 after 2027-12-31. Migrate to the {file}`nixexprs.tar.zst` tarball
  instead.

  This affects for example users who pull Nixpkgs as a flake input from
  https://channels.nixos.org:

  ```diff
  -nixpkgs.url = "https://channels.nixos.org/nixos-26.05/nixexprs.tar.xz";
  +nixpkgs.url = "https://channels.nixos.org/nixos-26.05/nixexprs.tar.zst";
  ```

## New Modules {#sec-release-26.11-new-modules}

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- [Nezha](https://github.com/nezhahq/nezha), a self-hosted, lightweight server and website monitoring and O&M tool. Available as [services.nezha](#opt-services.nezha.enable).

- [feishin](https://github.com/jeffvli/feishin), a modern self-hosted music player. Available as [services.feishin](#opt-services.feishin.enable).

- [FlapAlerted](https://github.com/Kioubit/FlapAlerted), detects BGP flapping events and provides statistics based on BGP update messages. Available as [services.flap-alerted](#opt-services.flap-alerted.enable).

## Backward Incompatibilities {#sec-release-26.11-incompatibilities}

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## Other Notable Changes {#sec-release-26.11-notable-changes}

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