Added note to 0.6 saying that all features deprecated in 0.4 have been removed

docs/releases/0.4.rst

@@ -158,6 +158,8 @@ The scheduled publishing mechanism adds an ``expired`` field to wagtailcore.Page
   'expired': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
 
 
+.. _04_deprecated_features:
+
 Deprecated features
 ===================
 

docs/releases/0.6.rst

@@ -33,6 +33,11 @@ Bug fixes
 Upgrade considerations
 ======================
 
+All features deprecated in 0.4 have been removed
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+See: :ref:`04_deprecated_features`
+
 
 Deprecated features
 ===================