famitsu.com has the first exclusive pictures of the tournament mode, a mode that will be part of the free downloadable Championship edition expansion pack. Unfortunately the article is in Japanese and i am still looking for someone to translate it for us.
I addition to the tournament mode, famitsu has also revealed some pictures of the custom taunts that you can unlock within the game.
I will update this post with a translated version of the famitsu article as soon as i get it
EDIT: Here is an exclusive translation from the awesome Tom Mills: