+More flexible and consistent tagging operations
+
+ All tagging operations ("+", "-", "*") now accept multiple tags with
+ "+" or "-" prefix, like "*" operation in notmuch-search view before.
+
+ "*" operation (`notmuch-show-tag-all') is now available in
+ notmuch-show view.
+
+ `Notmuch-show-{add,remove}-tag' functions no longer accept tag
+ argument, `notmuch-show-tag-message' should be used instead. Custom
+ bindings using these functions should be updated, e.g.:
+
+ (notmuch-show-remove-tag "unread")
+
+ should be changed to:
+
+ (notmuch-show-tag-message "-unread")
+
+Refreshing the show view ('=' by default) no longer opens or closes messages
+
+ To get the old behavior of putting messages back in their initial
+ opened/closed state, use a prefix argument, e.g., C-u =.
+
+Attachment buttons can be used to view or save attachments.
+
+ When the cursor is on an attachment button the key 's' can be used
+ to save the attachment, the key 'v' to view the attachment in the
+ default mailcap application, and the key 'o' prompts the user for an
+ application to use to open the attachment. By default Enter or mouse
+ button 1 saves the attachment but this is customisable (option
+ Notmuch Show Part Button Default Action).
+