http://www.neogaf.com/forum/showpost.php?p=190046486&postcount=735
It's official now, Splatoon Bundle is sold out (forever). It was a limited print, and it won't be restocked again.
Sold out in Bic Camera and Yodobashi Camera. Other stores are selling their last units.
I guess Nintendo's plan was to sell the bundle the whole holiday season, but it ran out earlier than expected.