Nope. It doesn't come with AT&T version. AT&T version, all you get is the phone, battery, ac charger, usb cable, $25 media hub (tv shows only), manuals.
Based upon what I've seen, you need a MHL adapter for the phone. Its just a little box that plugs into USB, and had a USB port on it for power input and an HDMI port. There's cheap out there, like this one.
I have an MHL adapter and it does work but you need to plug the power into the thing in order for it to do anything. My receiver has usb and hdmi on the front so that works for me. It would be nice to have 1 cable, but this works.
Unfortunately I believe that's the case with any MHL device. There's a chip inside that box that transcribes the MHL signal (coming over the 5 pin USB connector) to a full HDMI signal, and it requires power. It's not all that bad though, as you would probably want to be charging your phone while playing a video anyways.
Eventually most of the high end TVs will have the MHL. You will still need the adapter but you will not need to power it. The TV will not only power your phone but charge it.
I pocketed the HDMI MHL adapter from my infuse when I returned it under the 30 day ATT trial... The screen was pixelated in my infuse in the top left hand corner so they were more concerned with my device being defective than me just not liking it and only asked me if the charger was in the box.
Unfortunately I believe that's the case with any MHL device. There's a chip inside that box that transcribes the MHL signal (coming over the 5 pin USB connector) to a full HDMI signal, and it requires power. It's not all that bad though, as you would probably want to be charging your phone while playing a video anyways.