Hi there i took notes of it before when it was available. Hope this hepls.

Added, Improved and Removed

New Features

• Bookmark items from both inside and outside community
• Connect communities thorugh bridging (optional module)
• Upload, embed and display video (optional module)
• Capture comunity activity with Analytics (optional module)
• Do sentiment analysis of content (optional module)

Improvements

• Focus search with contextual type-ahead
• Get to useful serach results faster
• More convenient access to actions related to people
• Improved profile editing
• Consolidate views with new Places widget
• Easier content type development with custom content types
• More easily move content
• Easier file uploads
• Transaction Support
• Performance enhancements
• Formatted Text widget and HTML widget are no longer limited to 3500 characters.
• It's easier to create spaces.
• Improved application installation, upgrade, and performance via a better-integrated platform.

Removed

• Removed the ability to share a document with people outside the community.
• Removed a feature that sent usage data back to Jive Software.
• Removed the ability to migrate a database from one DBMS to another.
• Removed "order by rating" from the search results page.
• Removed ability to search by more than one content type at a time.
• default customizable / personalizable pages changed?
• Permissions for enabling and disabling photo and avatar uploads have been combined into a single setting.