New Feature Complete frontend design overhaul.
New Feature Unlimited number of custom badges based on user points.
New Feature Custom moods
New Feature Searchable hashtags
New Feature Added several new profile apps like My Groups, My Friends & Mutual Friends.
New Feature Nearby event search is now a module.
New Feature Media presentation improvements. Videos and photos can now open in modal window.
New Feature Theme designer
New Feature Ajaxified quick search in toolbar
New Feature Miniheaders for groups, events, videos, photos and people.
New Feature Content filtering is massively improved.
New Feature Tagging the users in comment just got better. Tag only the name, or even only last name of the user (works for comments only, improvement comming in the stream post soon)
New Feature Dropped Flash and utilizing more HTML5 functionality.
New Feature Videos can now play directly in the stream.
New Feature Re-designed submenu system.
New Feature Improved privacy for events and groups.
New Feature New API to allow applications with no content to be hidden on profile. Third-party developers will have to update their plugins. All plugins that comes with JomSocial already support this feature.
Improvement Up to 60FPS on page load.
Improvement Mobile view improvements all over frontend.
A full change log can be found here