http://mynintendonews.com/2014/11/15/theres-now-speculation-about-a-third-nintendo-ead-tokyo-team/
"Nintendo EAD Tokyo is renowned for creating some of the best video games of all-time. Now it appears as though there could be a potential third team over at Nintendo EAD Tokyo. Koichi Hayashida, who is behind Super Mario 3D Land and Super Mario Galaxy 2, isrumoured to be heading the division. It would appear that the adorable Captain Toad: Treasure Tracker is their first project.
Thanks, MasterPikachu6"
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Other sources (if you speak German, have fun!): Here
"German website Nintendo-Online published a new article today with speculation about a potential third team over at Nintendo EAD Tokyo. Super Mario Galaxy 2 and Super Mario 3D Land Koichi Hayashida director is said to be leading the new division. Assuming a third team exists, Nintendo-Online believes that Captain Toad: Treasure Tracker was the first project.
The speculation stems from Captain Toad’s credits. EAD Tokyo 2 producer Yoshiaki Koizumi is not mentioned, pointing towards a new group. This is further supported by a Japanese interview with Hayashida earlier this year in which he implied that he had received a promotion to producer."
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So, if this newer team made Captain Toad, what has the other team been working on this whole time that we have been unaware of?