++ All modules
Convert remaining conf.php.dist files to conf.xml files (done).
Fix or better cleanup redirection/frameset loading code (possibly done?).
Remove use of Prefs::setPref()/Prefs::getPref().
Find a better way of accessing user profiles (Identities).
Be able to access Horde preferences from within an application's options menu (i.e., if using IMP for authentication, there is no way to change Horde-wide preferences - maybe use Horde_UI_Tabs?)
++ Horde
Fix preferences with a "none" preference backend (done).
Package remaining Horde libs (done 99%).
++ IMP
HTML composition (has this been fixed with the recent patch?).
Folder changes updating correctly in cache (i.e. subscribed/unsubscribed switching without rebuilding the cache).