BuddyPress was updated to version 1.9, from version 1.8.1. Changelog highlights:
- The new Notifications component, which adds a Notifications menu to user profiles
- New widgets: Friends, Log In, Sitewide Notices
- Dynamic BuddyPress links for nav menus created at Dashboard > Appearance > Menus
A full list of changes can be found in the BuddyPress Codex.