Looks like Wii's controller shell has been revealed, even via Nintendo's website
(see url). Wiigamer writes: "Our sources have confirmed to us that this is definitely real, however several questions still remain - why is there a cable, and does the remote simply click onto the bottom of the unit? Or is it now a stand alone unit?"
Nintendo made no mention of the controller shell at today's media briefing, but hopefully we'll learn more when the E3 show floor opens tomorrow.