Service pack 2 for 0.8.8 is available from the download page (all the way to the bottom). It delivers Dutch, Wiki subpages, authentication plugins, improvements in the time part and the wiki part. Wiki can be used as a web site building engine. Service pack 2 offers more fields for contacts like food preferences, location, department, license plate. The reminders plugin is in the core now. A great job from ajax007. Lots of more improvements.
Be sure to run http://YOUR-SITE.com/public/patch.php?id=086-088-a to make the necessary database changes. Replace YOUR-SITE.com with your site url.