Add message box.

apps/www/_blog/2022-10-21-supabase-flutter-sdk-v1-released.mdx

@@ -11,6 +11,16 @@ date: '2022-10-21'
 toc_depth: 3
 ---
 
+<div className="bg-gray-300 rounded-lg px-6 py-2 bold">
+
+🚨 We are currently running our first-ever Flutter Hackathon, in partnership with FlutterFlow and Invertase 🚨
+  
+  Build and submit an app till 11:59 pm PT on Sunday, May 21st and win limited edition swag!
+
+[Learn more.](https://supabase.com/blog/flutter-hackathon)
+
+</div>
+
 A few months ago, we announced a [developer preview version of supabase-flutter SDK](https://supabase.com/blog/supabase-flutter-sdk-1-developer-preview). Since then, we have heard a lot of amazing feedback from the community, and have been improving it. Today, we are happy to announce the stable v1 of [supabase-flutter](https://pub.dev/packages/supabase_flutter). You can also find the updated [quick start guide](https://supabase.com/docs/guides/with-flutter), [documentation](https://supabase.com/docs/reference/dart) and a [migration guide from v0](https://supabase.com/docs/reference/dart/v0/upgrade-guide).
 
 ## What is new in v1?