An update is available for the Facebook Provider for the Outlook Social Connector. This updates the Facebook Provider to version 14.0.6114.5003.
No change log has been made available but the issue of not being able to directly add someone to Facebook via the Social Connector in Outlook is still there (leads to a 404 page). However, this is also more of an issue with the Facebook website than with the Outlook Social Connector as Facebook needs to process these URLs and send out the invite.
Update: The Outlook Team has made known that the new Facebook Provider supports secure HTTPS connections. An upgrade notification will also be shown in the People Pane later this month when you haven’t updated yet.