David,
There's always another JFBConnect in the works
To be honest though, the 5.0 release isn't a terribly exciting release. It's going to drop support for Joomla 1.5 and add support for Joomla 3.0. That comes with a huge code cleanup, which we're excited to implement. Additionally, the new release will have a completely new profile plugin system. All the features will pretty much be the same, but it will be much easier to develop new profile integration features going forward. The new "Social Profile Plugins" will also be cross-compatible with JLinked and will make it much, much easier to create other social networking integrations (mainly Twitter and Google) in the future.
So, no huge features, though some improvements and bug-fixes, and a more solid foundation for future features.
Hope that explains, even if it's not terribly exciting
Thanks for your patience,
Alex