Nintendo have gone a bit Zelda mad recently haven't they. I remember when it would be 4 years at least between each Zelda with only the odd handheld title appearing every now and then to keep the series running.
Then the Wii and DS come along and suddenly we start getting Zelda's on an almost yearly basis! Not that I am complaining
Can't see it being Cafe related, as in a launch title. Surely that would kill off Skyward Sword. I think it will either be an announcement that Skyward Sword is Cafe bound or a new 3DS Zelda is in the works.