Things to add to the release notes for the next full release:
+------------
+NEW FEATURES
+------------
+
+- All nmh programs will now warn about multiple profile entries for
+ the same non-null, non-comment component. In previous versions, all
+ but the first were silently ignored.
+- mhmail now supports all post(8) options, or optionally can use
+ send(1) with all of its options. Its formerly undocumented -resent
+ switch has been documented. And it has new -attach, -headerfield,
+ and -send/-nosend switches.
+- Default to flock() locking on OpenBSD and Darwin.
+- Added -directives support to mhbuild(1) to control whether or not
+ mhbuild will honor MIME directives by default. And added support
+ for special #on/#off/#pop directives to control the MIME directive
+ processing state.
+- Added -messageid switch to send(1) and post(8). This allows
+ selection of the style to use for generated Message-ID and
+ Content-ID header fields. The default localname style is
+ pid.time@localname, where time is in seconds, and matches previous
+ behavior. The random style replaces the localname with some
+ (pseudo)random bytes and uses microsecond-resolution time.
+- Added -clobber switch to mhstore(1) to control overwriting of
+ existing files.
+- Added -noall/-all switches to sortm(1). sortm -noall requires
+ a messages argument.
+- $PAGER overrides the compiled-in default pager command.
+- Added etc/scan.highlighted format file, as an example of how to
+ highlight/colorize the output of scan(1).
+- inc(1) now supports a -port switch to specify the port used by the
+ POP server.
+- pick(1) now decodes MIME-encoded header fields before searching.
+
+
+----------------------------
+OBSOLETE/DEPRECATED FEATURES
+----------------------------
+
+- Changed exit status of each nmh command's -version and -help
+ switches from 1 to 0.
+- The following environment variables were deprecated in nmh 1.5
+ and removed from this release:
+ MHPOPDEBUG (use -snoop command line switch instead)
+ MM_NOASK (use -nolist and -nopause command line switches instead)
+ NOMHNPROC (use -nocheckmime command line switch instead)
+ FACEPROC (undocumented faceproc feature removed)
+- Changed repl and dist default to -noatfile. The default of -atfile
+ was deprecated in nmh 1.5. If there are no requests to maintain
+ -atfile, it will be removed in the future.
+- The undocumented -queue switch to mhmail has been removed.
+- The undocumented -queue switch to post is deprecated/obsolete
+ and will be removed in the next release. It supports the
+ SMTP XQUE verb, which is obsolete according to
+ http://smtpfilter.sourceforge.net/esmtp.html
+- conflict(8) is deprecated and will be removed from the next release.
+- mhtest(8) is deprecated and will be removed from the next release.
+- spost(8) has been merged into post(8). Its functionality is enabled
+ by selecting the sendmail/pipe mail transport method, described in
+ the mh-tailor(5) man page. The spost -noalias, -backup/-nobackup,
+ -push/-nopush, and -remove/-noremove switches are not supported by
+ post. Note that spost did not support -whom or Dcc, and neither
+ does post when using sendmail/pipe. And spost would expand blind
+ aliases and send them in the message; post with sendmail/pipe
+ refuses to do that. For backward compatibility, spost has been
+ replaced by a simple shell script that exec's post -mts
+ sendmail/pipe.
+
+---------
+BUG FIXES
+---------
+
+- Replaced utilities that operate on pbm files with those that operate
+ on pnm files in etc/mhn.defaults [Bug #15152].
+- Removed obsolete BUGS section at end of rcvstore(1) man page [Bug #4361].
+- Fixed -nocc me doesn't account for Alternate-Mailboxes [Bug #36635].
+- Propagate Mail-Followup-To [Bug #5571].
+- "mark -sequence cur -delete all" now works for cur as well as any
+ other sequence, to allow clearing of the current message indication.
+- The first alias contained in a blind list is now expanded. The
+ mh-alias(5) man page was updated to show that blind lists must not
+ be terminated with, or contain, a trailing semicolon [Bug #15604].
+- Fixed sendfiles(1) to always provide a From: address. Also, updated
+ its switches.
+- Fixed pick(1) to properly unfold multiple-line header fields by
+ removing newlines instead of replacing them with spaces [Bug #15215].