Preferences: for the 'default selection on entering a folder' on the Display/Summaries page, the first new, first unread, and first marked message options are now sort-order aware.
Preferences: the previously hidden preference to 'Warn when sending to more recipients than ' has been added to the Mail Handling/Sending page.
Preferences: Toolbars/Compose window: Sign/Encrypt toggle buttons can been added to the toolbar.
Preferences: Fancy Plugin: allow stylesheet file/folder names to have spaces in them.
Account Preferences: a 'Show password' checkbox has been added next to the password fields.
Account Preferences: the OpenPGP and S/MIME preferences have been split into two separate pages.
Account Preferences: newline characters are disallowed in account usernames and passwords, and warnings are shown to the user if this is attempted.
Compose: more UTF-8 list-item characters have been added.
Address book: a 'Show password' checkbox has been added next to the LDAP server 'bind password' field.
GPG: full key/signature fingerprints are now shown instead of the short versions.
SSL Certificate Manager: added support for ipv6 addresses
Fortuna fortes juvat.