---
title: "Svelte extensions and interface languages | Rigel CMS changelog"
url: "https://rigelcms.dev/changelog/v1.1.0"
description: "Rigel CMS 1.1.0 adds custom Svelte blocks, grouped toolbar actions and build-time interface language selection."
---

# Svelte extensions and interface languages

October 28, 2026

Rigel CMS 1.1.0 adds [Svelte extensions](/docs/extensions/) and [interface language selection](/docs/languages/).

## Svelte extensions

Register custom article blocks, commands and SVG toolbar buttons with `defineExtension`. Group related actions in the toolbar. Extension blocks support editable Svelte components, validation, read-only previews and public rendering through `@rigel-cms/rigel/article`.

## Interface languages

Choose which translations to include with the `languages` configuration option. English and French are included by default. The available catalogs cover English, French, Spanish, Russian, Simplified Chinese, Japanese, Italian, German and Dutch. English remains the initial and fallback language; interface settings do not translate website content.

## Editor fixes

Floating insertion controls appear only in empty blocks. Focused controls show their tooltips again after clicking.

## Upgrade

```
pnpm add @rigel-cms/rigel@1.1.0
```

Restart the development server or rebuild your site after upgrading. Existing content and the shared drafts publishing workflow remain supported. Follow the [extension guide](/docs/extensions/) and [language guide](/docs/languages/) to configure the new APIs.