  * 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 store 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.  Picons.

  * You can import and export your RSS subscriptions from OPML files.  See 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 see MIME (Message Manual).

  * The option message-yank-empty-prefix now controls how empty lines are prefixed in cited text. See (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 require that GNU Libidn (http://www.gnu.org/software/libidn/) has been installed.

  * Gnus includes an Emacs Lisp SASL library.

     This provide 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 support it.

  * Gnus include 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 quering the user about whether to do so.

  * IMAP identity (RFC 2971) is supported.

     By default, Gnus do not send any information about itself, but you can customize it using the variable nnimap-id.

  * The all.SCORE file can be edited from the group buffer using W e.

  * Gnus now MIME decode articles even when they lack "MIME-Version" header. This changes the default of gnus-article-loose-mime.

  * Gnus now view DNS master files sent as text/dns using dns-mode.

  * Gnus now support the ``hashcash'' client puzzle anti-spam idea. See the Gnus manual, section Hashcash, for more information.  Use (setq message-generate-hashcash t) to enable.

  * Gnus supports new limiting commands in the Summary buffer: / r (gnus-summary-limit-to-replied) and / R (gnus-summary-limit-to-recipient).  Limiting.

  * Gnus supports a new sort command in the Summary buffer: C-c C-s C-t (gnus-summary-sort-by-recipient).  Summary Sorting.

  * The nnrss back end now supports multilingual text. Non-ASCII group names for the nnrss groups are also supported.  See RSS.

  * URLs inside OpenPGP: headers are retrieved and imported to your PGP key ring when you click on them.

  * Gnus uses narrowing to hide headers in Message buffers. The References header is hidden by default.  To make all headers visible, use (setq message-hidden-headers nil).

  * gnus-decay-scores can be a regexp matching score files. This allows to decay only adaptive score files.  Score Decays.

  * S/MIME now feature LDAP user certificate searches. You need to configure the server in smime-ldap-host-list.

  * Strings prefixed to the To and Newsgroup headers in summary lines when using gnus-ignored-from-addresses can be customized with gnus-summary-to-prefix and gnus-summary-newsgroup-prefix.  To From Newsgroups.