Alexandre,
Glad you're checking up on us! First off, there will be a release of JFBConnect and JLinked later this month, so keep an eye out for those.
Regarding Google+, we won't be releasing anything in the near future. G+ is still very restricted on what you can do through their API. They're starting to loosen some things up, but it's still completely Read-Only and there are a lot of limits on API calls and stuff.
With that said, our current plan is to get a Twitter extension out in late Summer, and then work on a Google+ one after that for either the end of the year or early next.
Hope that explains our tentative plans (which can always change), and thanks for all of your support!
Alex