+** Upgrading from previous (stable) version if you have used No Gnus.
+
+If you have tried No Gnus (the unstable Gnus branch leading to this
+release) but went back to a stable version, be careful when upgrading
+to this version. In particular, you will probably want to remove the
+`~/News/marks' directory (perhaps selectively), so that flags are
+read from your `~/.newsrc.eld' instead of from the stale marks file,
+where this release will store flags for nntp. See a later entry for
+more information about nntp marks. Note that downgrading isn't safe
+in general.
+
+** The nntp back end stores article marks in `~/News/marks'.
+
+The directory can be changed using the (customizable) variable
+`nntp-marks-directory', and marks can be disabled using the (back
+end) variable `nntp-marks-is-evil'. The advantage of this is that
+you can copy `~/News/marks' (using rsync, scp or whatever) to another
+Gnus installation, and it will realize what articles you have read
+and marked. The data in `~/News/marks' has priority over the same
+data in `~/.newsrc.eld'.
+
+** Picons can be displayed right from the textual address, see
+`gnus-picon-style'. *Note Picons::.
+
+** You can import and export your RSS subscriptions from OPML files.
+*Note RSS::.
+
+** The option `mm-fill-flowed' can be used to disable treatment of
+format=flowed messages. Also, flowed text is disabled when sending
+inline PGP signed messages.
+
+** You can now drag and drop attachments to the Message buffer. See
+`mml-dnd-protocol-alist' and `mml-dnd-attach-options'. *Note MIME:
+(message)MIME.
+
+** The option `message-yank-empty-prefix' now controls how empty lines
+are prefixed in cited text. *Note Insertion Variables:
+(message)Insertion Variables.
+
+** ANSI SGR control sequences can be transformed using `W A'.
+
+ANSI sequences are used in some Chinese hierarchies for highlighting
+articles (`gnus-article-treat-ansi-sequences').
+
+** International host names (IDNA) can now be decoded inside article
+bodies using `W i' (`gnus-summary-idna-message'). This requires that
+GNU Libidn (`http://www.gnu.org/software/libidn/') has been installed.
+
+** Gnus includes an Emacs Lisp SASL library.
+
+This provides a clean API to SASL mechanisms from within Emacs. The
+user visible aspects of this, compared to the earlier situation,
+include support for DIGEST-MD5 and NTLM.
+
+** ManageSieve connections uses the SASL library by default.
+
+The primary change this brings is support for DIGEST-MD5 and NTLM,
+when the server supports it.
+
+** Gnus includes a password cache mechanism in password.el.
+
+It is enabled by default (see `password-cache'), with a short timeout
+of 16 seconds (see `password-cache-expiry'). If PGG is used as the
+PGP back end, the PGP passphrase is managed by this mechanism.
+Passwords for ManageSieve connections are managed by this mechanism,
+after querying the user about whether to do so.
+