Northrop Grumman today (24 March) received approval for a US patent for an "ornamental design" for a flying wing aircraft with canard.
Bill Sweetman, on Av Week's Ares blog, sheds some light on a similar patent for the aircraft, sans canard.
Here are the other figures...
There are some signficant differences with the B-2 however. Below is the top-down view of the original B-2, from aerospaceweb.org
Here's the bottom view of the new design.
Here's an overview of the one-page patent, filed in December of 2007.