At long last, Sling Media has released the 3G-capable version of their TV streaming application, SlingPlayer Mobile [App Store, $29.99], to the App Store. The new version is able to stream video from your TV connection at home to your iPhone, and now instead of being restricted to working over Wi-Fi only, it will stream on AT&T's 3G network as well. The release is following AT&T's lift on a ban on the 3G-capable version of the application, which they initially put in place over concerns about it taking too much traffic for the network to handle.