Tim,
JFBConnect is already fully compatible with the latest 2.1 release of the Facebook Graph API. All apps created over the last 2 or so months are all required to use the 2.1 API, so we have to support that, or there would be a lot of unhappy users.
Of course, if you're running into any specific issues, just let us know what they are, and we'll gladly help however we can.
Thanks,
Alex