chore: update launch blog

www/_blog/2021-03-25-launch-week.mdx

@@ -87,8 +87,16 @@ You can use storage for your terabytes of ML training data, e-commerce product g
 ## Wednesday: CLI
 
 - 31 March 2021
-- Details: [Coming soon]
-- Get Notified: Follow us on [Twitter](https://twitter.com/supabase_io), or visit this page on Wednesday.
+
+Today is Day 3 of [Launch Week](https://supabase.io/blog/2021/03/25/launch-week), and as promised - we're releasing our CLI.
+
+Today we launched the Supabase CLI which includes:
+
+- Running Supabase locally
+- Managing database migrations
+- Self hosting with Docker!
+
+Check out the announcement post here: [https://supabase.io/blog/2021/03/31/supabase-cli](https://supabase.io/blog/2021/03/31/supabase-cli)
 
 ![Supabase CLI](/new/images/blog/launch-week/bernie-3.png)