I noticed that the little android guy is on the back cover...therefore...this is probably an early prototype of the back....BUT the nexus one prototypes had the guy on the back as well with the 'flag' and that back is the same as the one on the retail N1s now...
Part of me wants to think that the back we've seen is not the retail back...but I think it is going to stay and we will either be seeing tons of angry consumers ready to spray paint the back a different color or interchangeable backplates.
The other part of me thinks that the back will change because, like many of you have said, it is missing VZW and/or Google logo(s).
The third part of me, hopes that the weird shape houses a larger battery and allows for a flush camera mount.
Included: cropped pictures of the android guy on the backplate and the thinness of the device (which looks pretty damn thin)