Could this simple, lozenge-shaped device be what we're all talking about come Thursday morning? Currently, all the evidence points to a souped-up DS being unveiled during Nintendo's Media Summit, but NeoGAFfer Shiggy spotted this on the site of European trademark body OAMI.
It was registered by Nintendo in late-August, and is apparently a pedometer. This being related to Wii Fit in some way seems like an obvious first guess, but any speculation we indulge in is just that for now. Like most companies, Nintendo is always registering stuff, some of which it never uses, or some of which doesn't get officially announced until months or years later. This post could just be a really, really early preview for ... some gadget Nintendo releases three years from now!