Merge pull request #21280 from backstage/rugvip/release-notes

docs: add 1.20 release notes

docs/releases/v1.20.0.md

@@ -0,0 +1,50 @@
+---
+id: v1.20.0
+title: v1.20.0
+description: Backstage Release v1.20.0
+---
+
+These are the release notes for the v1.20.0 release of [Backstage](https://backstage.io/).
+
+A huge thanks to the whole team of maintainers and contributors as well as the amazing Backstage Community for the hard work in getting this release developed and done.
+
+## Highlights
+
+### Support for experimental type build has been removed
+
+The `--experimental-type-build` option is no longer supported by any commands in the Backstage CLI. Existing usage should be migrated to using [subpath exports](https://backstage.io/docs/local-dev/cli-build-system#subpath-exports) instead.
+
+### Experimental support for Vite ⚡
+
+Due to some concerns about performance in larger monorepo setups and hot-reloading times, we’re looking to replace [Webpack](https://webpack.js.org/) with [Vite](https://vitejs.dev/) longer term, and in this release we’re shipping experimental support for Vite behind an `EXPERIMENTAL_VITE` environment variable flag when running `yarn start` in the frontend.
+
+Please reach out by [creating a GitHub issue](https://github.com/backstage/backstage/issues/new/choose) with any problems that you might be running into when using this experimental feature.
+
+### Scaffolder: `react-jsonschema-form@v5` + Design tweaks 💅
+
+It’s finally here. We’ve shipped support for `react-jsonschema-form@v5` which **should** be a completely non-breaking change for end users. We’ve also tweaked some of the designs for some of the new Scaffolder Pages. You can read more in the [relevant migration docs](https://backstage.io/docs/features/software-templates/migrating-to-rjsf-v5)
+
+### Catalog Presentation API
+
+The Catalog plugin now uses the `EntityPresentationApi` to decide how entities are rendered in the UI. This includes fetching catalog data in the background in order to show entities using their `metadata.title`. For more information, including how to customize the presentation, see [the PR](https://github.com/backstage/backstage/pull/17474), (documentation is in the works!).
+
+## Security Fixes
+
+This release does not contain any security fixes.
+
+## Upgrade path
+
+We recommend that you keep your Backstage project up to date with this latest release. For more guidance on how to upgrade, check out the documentation for [keeping Backstage updated](https://backstage.io/docs/getting-started/keeping-backstage-updated).
+
+## Links and References
+
+Below you can find a list of links and references to help you learn about and start using this new release.
+
+- [Backstage official website](https://backstage.io/), [documentation](https://backstage.io/docs/), and [getting started guide](https://backstage.io/docs/getting-started/)
+- [GitHub repository](https://github.com/backstage/backstage)
+- Backstage's [versioning and support policy](https://backstage.io/docs/overview/versioning-policy)
+- [Community Discord](https://discord.gg/backstage-687207715902193673) for discussions and support
+- [Changelog](https://github.com/backstage/backstage/tree/master/docs/releases/v1.20.0-changelog.md)
+- Backstage [Demos](https://backstage.io/demos), [Blog](https://backstage.io/blog), [Roadmap](https://backstage.io/docs/overview/roadmap) and [Plugins](https://backstage.io/plugins)
+
+Sign up for our [newsletter](https://info.backstage.spotify.com/newsletter_subscribe) if you want to be informed about what is happening in the world of Backstage.

microsite/docusaurus.config.js

@@ -178,7 +178,7 @@ module.exports = {
             position: 'left',
           },
           {
-            to: 'docs/releases/v1.19.0',
+            to: 'docs/releases/v1.20.0',
             label: 'Releases',
             position: 'left',
           },

microsite/sidebars.json

@@ -1,6 +1,7 @@
 {
   "releases": {
     "Release Notes": [
+      "releases/v1.20.0",
       "releases/v1.19.0",
       "releases/v1.18.0",
       "releases/v1.17.0",