There’s more good news for app junkies out there. UStream is now officially available in the App Store, allowing users to stream video content over 3G and Wi-Fi connections. It’s a big step for the app approval process and more like a leap off a cliff for AT&T’s network.

UStream isn’t the first app to offer streaming. That distinction goes to Knocking, another app that paved the way for UStream, proving that both Apple and AT&T would allow such a demanding application to break through the notoriously awful approval process. Of course, it remains to be seen whether the network can actually handle that sort of strain. In fact, AT&T has said several times that high data traffic causes most of the network issues. These apps definitely won’t help that situation.

It’s nice to see developers continue to push AT&T to provide some of the cool options the iPhone has available. Let’s hope AT&T will come around to the idea…right.