this post from IGN's Matt Cassamassina positing that Activision is working on an accelerometer-equipped, tilt-sensitive attachment for the Nintendo DS' Game Boy Advance slot. Nothing too surprising about that news, but the post jumps off from there to suggest Nintendo is also working on a similar tilt-sensing cart for the DS slot. Why would they do such a thing? Because Nintendo is planning to release a new DS without a Game Boy Advance slot, of course.
Yes, IGN buried the lede a bit, suggesting two paragraphs down that "trusted insiders that Nintendo" say a new, slimmed-down DS (a la the Game Boy Micro) could be coming out soon. The new unit would have no GBA slot (thereby explaining the need for tilt-sensitive DS carts) and come in at a cool sub-$100 price, if IGN is to be believed. Of course, IGN still considers everything it writes just a rumor. We'll know soon enough, as anything from Activision or Nintendo would likely be revealed at their press conference tomorrow.