Rumor has it that Nintendo is hard at work on a followup to its incredibly popular DS handheld; a DS2, if you will. They're far enough along, in fact, that a handful of developers in Japan already have development kits.
These kits hint at the capabilities of the new handheld, including motion controls. This is in no way surprising, given that Nintendo's Wii brought motion controls to the masses and the iPhone brought it to handheld gaming. But it looks like Nintendo is keeping motion controls at the heart of their plans. Hopefully we'll have more details about the DS2 soon.