diff --git a/README.md b/README.md
index fa95019..c3c6cc4 100644
--- a/README.md
+++ b/README.md
@@ -8,14 +8,31 @@ Husk is written in Rust and uses Sequoia PGP for encryption and certificate hand
 
 ## Status
 
-Milestone 3 is reached and with it Husk has aquired a set of new features:
+Milestone 4 is reached and Husk gains some new features:
 
-- Online sources (keyservers, WKD, DANE) are now queried for missing
-  certificates.
-- Introducers are now available: certificates are only used if they are
-  certified by an introducer and match its list of configured domains.
-- Locals are available: These are certificates hand picked and added 
-  by the administrator.
+- Husk will wrap an email it encrypts into a fitting mime structure
+  so that MTUs (Mail user agent, like Thunderbird) can display the 
+  message properly.
+- Husk now can deal which attachments.
+- Header protection will be used with encrypted emails.
+- Husk can sign messages if you provide it with an appropriate key.
+- Hush can now send itself into the background. It now understands start, stop 
+  and status.
+- When building Husk from source, files for shell completion are generated. 
+- When listing introducers their associated domains are also displayed.
+
+Please refer to the [documentation](/documentation) for a full list of all 
+features and their usage.
+
+Husk can now be used safely for pass-through mail encryption, **but**:
+
+As Husk only encrypts if an authenticated certificate is available, emails
+with more than one recipient are only encrypted if there are certificates
+for all recipients - otherwise the mail will not be changed. That means 
+that even if a certificate is available for a certain recipient, it might 
+not be used.
+
+This behavior will be improved in milestone 5.
 
 ## Documentation