The VoIP app Fring has updated to take advantage of the front facing camera on the iPhone 4, offering face-to-face video calling over both 3G and Wi-Fi.  If you’re willing to part with your hard-earned AT&T megabytes, then Fring is the way to go, it seems. Previous versions allowed video calling, but since it had to use the rear camera, you couldn’t do it face-to-face. You’ll probably see a quality hit with the 3G version too.

So, what else is included in this update? Here’s a full list of features and improvements:

Fring changes the way you use your iPhone, again.
Richer social communication includes 2-way video calls, multi-tasking, social stream + more!
* 2-way video on iPhone (for OS4). Over 3G and wifi, so you can see your friends wherever you are.
* Multitasking means you are always on and available to your friends. So you can keep Fring open in the background, even as you use other iPhone services/apps.
* New Social Stream: Chronologically stream all your twitter, facebook, chats and call updates, all in one place
* A Smarter address book: manage your buddy list, merge contacts

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