http://www.mmv.co.jp/special/game/30/

Looks like a tri force in there? Marvelous Entertainment are behind the Harvest Moon series, does anyone know if it has anything to do with that?

Or are Nintendo trusting Marvelous with a handheld Zelda? Any ideas?

THIS IS SPARTA!!!

Harvest Moon/Legend of Zelda crossover?

It looks like a wooden triforce to me. It is certainly a clock ticking down towards something, so we should know when it reaches 0. Only about 481,000 seconds to go. Which will be in 133 days if my math is right.  That is getting close to the next E3.  Maybe Marvelous is working with Nintendo on Wii Zelda!

Kinda does look like a triforce
whats the feather at the bottom? anyone know what that relates to?
With it being "marvelous entertainment" this mignt also be Harvest Moon Online
http://en.wikipedia.org/wiki/Harvest_Moon_Online

we can only wait and see

Perhaps a handheld or WiiWare Zelda?

It is definitely a triforce see the triforce symbol inside the wooden one at the top of the triangle? I also noticed something just now, when it reached the hour, all of a sudden the hands of the clock slid backwards, there was like a flash of lightning, and then it started counting down the next hour this happened when there was about 480,800 to go. Edit: I looked again and that actually happens when it completes each minute.

It's new Zelda!!! :)

I think it should finish in about five days...

Since those hands slide back it makes me also think of Link to the Past and Ocarina of Time. The feather...that's like the feather that falls off the bird at the beginning of Windwaker.