We updated the Update XML files for all of our really old extensions recently. If you're seeing that for the Kunena profile plugin, it means you still have the really old "jfbcprofiles - kunena" plugin installed.
You should go to your Joomla Installer -> Manage area and find any jfbcprofiles extensions that are installed and uninstall them.
Please ensure you are not uninstalling the socialprofiles plugins. Those are what are current and will continue to be used going forward. The older jfbcprofiles, and multiple jfbcxyz modules (jfbcfan, jfbcfeed, jfbclike, etc) are no longer installed or used by JFBConnect. For the modules, you should be switching to the SCSocialWidget module, in case you're curious
I hope that helps explain,
Alex