Dual touch screen DS?

Reports are out that Nintendo has filed a US patent for a system to utilize dual touch screens. Could a new DS be on the horizon? With the DS Lite still awaiting retail deployment I hope that any new variations of the DS are a few years off.

Edit: I should clarify that a DS with 2 touch screens is not what this patent refers to. Instead it refers to a touch screen that can detect 2 simultaneous touches on a single screen.

Source: NextGen.biz

http://www.snackbar-games.com/n1610.html