Sorry for the delay and confusion. The SourceCoast library was updated, which is used by multiple extensions. The changes were specific to JLinked, our LinkedIn extension and don't affect JFBConnect at all.
We'll be fixing the update problem for those with JFBConnect, but there's nothing to be concerned with right now. There will also be a 5.0.1 release of JFBConnect later this month which will also include the newest library release.
I hope that helps explain, but if you have any other questions, just let me know.
Thanks,
Alex