Add the news post for the v4.0.0rc2 release.

_posts/2024-06-07-v400rc2-released.md

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+---
+title: InspIRCd v4.0.0rc2 released!
+author: Sadie
+layout: post
+contributors:
+ - Sadie Powell
+ - Val Lorentz
+---
+
+InspIRCd v4.0.0 release candidate 2 is now available, [download it from the releases page](https://github.com/inspircd/inspircd/releases/tag/v4.0.0rc2).
+
+This is the second release candidate on our new v4 branch which has been in development for five years. An overview of the changes in this release [can be found on the docs site](https://docs.inspircd.org/4/overview/).
+
+<!--more-->
+
+Many breaking changes have been made since the v3 branch. Please consult [the list of breaking changes](https://docs.inspircd.org/4/breaking-changes) if you are upgrading from v3.
+
+The full change log can be found [on the docs site](https://docs.inspircd.org/4/change-log/#inspircd-400rc2) or [on GitHub](https://github.com/inspircd/inspircd/compare/insp3...v4.0.0rc2).
+
+If you find InspIRCd useful please consider [supporting its development via GitHub Sponsors](https://github.com/sponsors/SadieCat/).