Changelog diff is:

diff --git a/Changes b/Changes
index 9eb902f..15133b0 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,8 @@ Revision history for Perl extension RxPerl
 
 {{$NEXT}}
 
+v6.28.0 2023-09-28T18:45:00Z
+
     - removed op_group_by operator, because it was too buggy.
         (If anyone has a good grasp of how it works/what it should do, feel free to contact me)
     - removed EXPERIMENTAL status of the two promise functions, since rxjs v7 has been released