Update: Fring's Jailbroken iPhone App Now Live
It is now live. (Warning: You will need to Jailbreak your iPhone to make it work). The Fring blog has more details or you can download it at the Fringcubator. With so many minutes on most cell phone plans, most people won’t be using this to make local calls. But it could come in handy for international calls or simply keeping up with IM on the go. The latter is really the killer app.
And here’s a video of how it works: