The new 3DS XL with a 4.88 inch upper screen will launch this August 19th in the United States for $199.99. The pricetag includes a 4GB SD card along with the choices of either a red or blue 3DS XL.
The new 4.88 inch screen is about 40% larger than the current 3.5 inch screen on 3DS models now. The bottom screen also measures in larger at 4.18 inches. The battery life also outlasts the current 3DS.
For more information, you can view the video here: http://www.nintendo.com/nintendo-direct/archive/06-21-2012