Update Release_Notes_4.1 beta4

Release_Notes_4.1-beta4.md

@@ -17,8 +17,6 @@ These release notes cover changes between ```AppArmor-4.1~beta1 and AppArmor-4.1
 - This Release contains bug fixes to AppArmor 4.1 beta1, beta2, beta3.
 - This release includes new CI E2E testing via the spread frame work. A big thanks to Zygmunt Krynicki for all his work on improving the testing.
 
-
-
 ## Known issues
 
 * profile: unshare has a known issue around profile transitions
@@ -29,6 +27,21 @@ These release notes cover changes between ```AppArmor-4.1~beta1 and AppArmor-4.1
   * control of disconnect mounts is missing
   * handling of conflicting mount options is not backwards compatible
 
+# Obtaining the Release
+
+This beta release is only available through gitlab
+
+**Important note:** the gitlab release tarballs differ from the launchpad release tarballs. The launchpad release tarball has a couple processing steps already performed:
+
+* libapparmor `autogen.sh` is already done, meaning distros only need to use ./configure in their build setup
+* the docs for everything but libapparmor have already been built
+
+### gitlab
+
+- https://gitlab.com/apparmor/apparmor/-/releases/4.1.0-beta4
+
+# Changes in this Release
+
 ## Misc
 
 - apparmor.vim