LG unveiled the new LG Arena LG-KM900 as the first touchscreen phone that features LG's new S Class UI, which uses full 3D navigation elements at the MWC 2009 last month. Today LG announced that the LG Arean LG-KM900 will start shipping this month in major European markets.

The LG Arena is a nicely equipped touchscreen smartphone. Features of the LG-KM900 include 3.0-inch WVGA screen, 8GB internal memory, 5MP camera, 120fps video recording, TV-Out, FM Transmitter, aGPS, WiFi, media player with DivX support, 3G HSDPA 7.2 networks and Bluetooth.
The highlight of the LG Arena is the 3D cube based UI dubbed 3D S-Class User Interface. The LG Arena uses an AMD chip for smooth rendering of the 3D graphics.

At the S Class UI core is a 3D cube layout that provides four customizable home screens. Users can have much faster and easier access to all features by flipping the cube with just the flick of a finger. The Elastic Lists feature is one of a kind with list items being stretched like a rubber band when touched, eliminating the extra step of switching to a new screen for other choices.
You can see the UI in action in this LG Arena Promo Video. See also the Arena site.