+Notmuch 0.15 (YYYY-MM-DD)
+=========================
+
+Command-Line Interface
+----------------------
+
+Empty tag names and tags beginning with "-" are deprecated
+
+ Such tags have been a frequent source of confusion and cause
+ (sometimes unresolvable) conflicts with other syntax. notmuch tag
+ no longer allows such tags to be added to messages. Removing such
+ tags continues to be supported to allow cleanup of existing tags,
+ but may be removed in a future release.
+
Notmuch 0.14 (2012-08-20)
=========================