For those of you out there (me being one) that want to get the best version of Mass Effect 3 you can get, you are in luck. The collectors edition named the "N7 Edition" (sweet name) has been announced and its seems like a good deal.

Here's what you get
Copy of Mass Effect 3 in a cool metal case.
A hardcover artbook
comic
Lithograph of The Normandy
Fabric N7 Patch
And a bunch of DLC stuff including guns, missions, characters, robo-pets, clothing, and avatar stuff.