LG is going to announce the Optimus G Pro for AT&T in the coming days at an event in New York City, exactly on May 1. But even so, there is still a specifications leak came out to public, the last leak for sure before it's getting announced officially. It would be too much if there will be another leak again after this.
The specifications of the device are generally alike to its LG Optimus G Pro Korean version. The device adopts quad-core Qualcomm Snapdragon 600 chipset, 2GB RAM, 32GB of built-in memory, microSD card slot, and a 13MP back camera.
There is a little difference though, for the US version the LG Optimus G Pro will bring a Full HD IPS display panel, as opposed to a True HD-IPS+ one in its Korean sibling. And that naturally, the US version will support for different bands in order to play good with AT&T's LTE network.
The device will be powered by Android 4.1.2 Jelly Bean. AT&T's own additions are said to be kept to a minimum.