diff --git a/.changeset/new-beers-drive.md b/.changeset/new-beers-drive.md
new file mode 100644
index 0000000000..370734b7c5
--- /dev/null
+++ b/.changeset/new-beers-drive.md
@@ -0,0 +1,7 @@
+---
+'@backstage/plugin-catalog': patch
+---
+
+Create declarative extensions for the `Catalog` plugin; this initial plugin preset contains sidebar item, index page and filter extensions, all distributed via `/alpha` subpath.
+
+The `EntityPage` will be migrated in a follow-up patch.
diff --git a/.changeset/sharp-falcons-clean.md b/.changeset/sharp-falcons-clean.md
new file mode 100644
index 0000000000..bc247be451
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+++ b/.changeset/sharp-falcons-clean.md
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+---
+'@backstage/frontend-app-api': patch
+---
+
+Register default implementation for the `Translation API` on the new `createApp`.