New features 

• Themes gallery with automatic theme download and installation
• Mobile version for iPhone, Android, Palm Pre and other modern mobile devices
• Added dedicated "Browse Videos" page with global site video search
• Twitter integration (status updates are posted to Twitter)
• Scheduled announcements (administrators can schedule announcements to be sent on specific dates, specific dates after registration or inactivity)
• Support for "Salute photo"
• Support for "Link" profile question type
• CCBill payment processor support
• Daopay payment processor support
• AlertPay payment processor support
• New "Top Voted Users" web part
• New "photo stack" effect for user primary thumbnails
• Groups auto join feature (administrators can specify groups to be automatically joined when a user is registered; filtering by country/state/city is supported)
• "Redirect to url after logout" setting
• Ability to display site theme based on the selected language
• Plugin diagnostic and status in admin tool

Upgraded features 

• Completely rewritten payment handling
• Simultaneous support for credits and subscriptions
• Mailbox can show additional status - whether the message has been read and/or deleted
• Enhanced user search page with dynamic search fields
• Video uploads feature support widescreen files (16x9)
• More title/meta tags settings
• Enhanced news editing page
• Migration to Google SDK for YouTube embeds and GMail invitations

Cosmetic changes

• CKEditor supported for HTML editing
• New icons for web parts
• New icons for message status
• Theme updates