...and it's 912p as confirmed by this Eurogamer article by Digital Foundry:
The original plan was to ship it at 900p, but in the meantime there has been a SDK update which, I guess, was not enough to boost the res to full 1080p, but it's cool (nudge nudge, wink, wink) that they squeezed 12p! ;)
So I guess the new standard for Bone from now on won't be 792p but 912p. Full HD is now just 168p away!!!