There was a thread posted on this a few days ago

The Triforce symbol is actually an old symbol in japan not related to Zelda at all so it may just be using that for publicity.

Also the triangles go in a 3.. 2.. 1.. and back to 3 again fashion.

Another theory was the clock resetting could point to Majoras Mask

Or Roc's feather, anyone?

It´s not a crazy theory, remenber: Zelda Oracle of time/season and minish cap where developed by CAPCOM, and Nintendo it´s in this moment a little short of handwork to make all the games people wants.

Nintendo's Zelda team is supposed to be working on the next Zelda, so maybe it is an mmo set in Hyrule or an rts that deals with Gustave's story and the war for the pickary sword.

I think it's just publicity, like puffy said, and will actually relate to a game about Japanese mythology, like Okami. The clock is just that, a clock for the countdown, not representing anything

Marvelous is so wierd.
(>'.')>

That is really weird.

I just don't know. Those are perfect Zelda triangles.