diff --git a/.changeset/forty-ties-agree.md b/.changeset/forty-ties-agree.md
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+---
+'@backstage/frontend-plugin-api': patch
+---
+
+Added a new `IconBundleBlueprint` that lets you create icon bundle extensions that can be installed in an App in order to override or add new app icons.
+
+```tsx
+import { IconBundleBlueprint } from '@backstage/frontend-plugin-api';
+
+const exampleIconBundle = IconBundleBlueprint.make({
+  name: 'example-bundle',
+  params: {
+    icons: {
+      user: MyOwnUserIcon,
+    },
+  },
+});
+```
diff --git a/.changeset/forty-ties-disagree.md b/.changeset/forty-ties-disagree.md
new file mode 100644
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+---
+'@backstage/frontend-app-api': patch
+---
+
+Support icon overriding with the new `IconBundleBlueprint` API.