That's something we'd like to do in the future, but right now, it's not an automated process. However, if you're using our JFBCProfile - JomSocial plugin, that will fetch the user's current Facebook status and update their JomSocial activity stream with it when they login. The process of fetching it automatically, as it's updated on Facebook, is the missing link that we're hoping to implement in the first half of next year.
Hope that explains, but if not, or you need more information, just let us know!
Thanks,
Alex