Emacs uses the "blocking bug(s)" feature of Debbugs for bugs need to
be addressed in the next release.
-Currently, bug#19759 is the tracking bug for release of 25.1. Say
-bug#123 needs to be fixed for Emacs 25.1. Send a message to
-control@debbugs.gnu.org that says:
+Currently, bug#19759 is the tracking bug for release of 25.1 and
+bug#21966 is the tracking bug for release of 25.2. Say bug#123 needs
+to be fixed for Emacs 25.1. Send a message to control@debbugs.gnu.org
+that says:
block 19759 by 123