just a guess, but, I can't see them using anything less than the 24-105 f4L as the 'kit' lens. If we assume that the kit L lens will be bundled for an extra $800, that would mean the body price would be $2700 (assuming the $3500 price tag is both accurate and with lens). I don't know, something in me says $2700 would be too low, $2900, or the silly 2999 tag may be applied (lol, it looks less than 3000, lol, its silly but there is a rule of 5's and 9's in pricing for a reason!) - so kit would then fall in at $3700, or, they could take a loss on the 24-105 and boom, looks like a great deal!!! With all the mkii lenses now, the 24-105 may very well get an update soon, so tossing a serious discount on it may in the end just be a way to clear inventory.
As with all this stuff though, who the hell knows!!!!