app/models/edition.rb in govuk_content_models-43.0.1 vs app/models/edition.rb in govuk_content_models-43.1.0

@@ -98,10 +98,15 @@
   def in_progress_sibling
     subsequent_siblings.in_progress.order(version_number: "desc").first
   end
 
   def can_create_new_edition?
+    return false if retired_format?
     !scheduled_for_publishing? && subsequent_siblings.in_progress.empty?
+  end
+
+  def retired_format?
+    Artefact::RETIRED_FORMATS.include? format.downcase
   end
 
   def major_updates_in_series
     history.published.major_updates
   end