The next gen LG chocolate was mentioned here recently. More details have emerged (if they are not faked that is) that confirm the existence of a wider aspect screen of 21:9 (800 x 345 pixels).
The screen measures about 4 inches diagonal. The phone has a flash based UI and just looking at the video it appears that the very wide aspect ratio works well.
Other features seen in the video include multi-touch, AGPS, 7.2Mbps HSDPA as well as a scratch proof screen.