Angular v21 was release in november 2025 - 6 months ago at the time of writing this, however Ionic does not support it yet. Angular v22 is expected to release in a few weeks. In my opinion, keeping up with Angular releases is the most important feature of a library building on top of it. All users of Ionic are blocked from the latest features, bug fixes and security patches in Angular v21 and soon v22, because of this. Angular v20 is ending its Long Term Support in november 2026, and Ionic is blocking users from updating. As a user I would expect Ionic to actively work on support during the Release Candidate phase of Angular, and release shortly after (within days or a few weeks). I work on a large Angular/Ionic project with 10s of thousands of Typescript files. Updating Angular versions takes a long time, and Ionic is currently reducing the window we have to update before the LTS ends. We are considering moving away from Ionic, just to remove this risk.