The site states:
“In celebration of the 25th Anniversary of ‘The Legend of Zelda’, The King of Games is excited to introduce a very special edition t-shirt to mark the occassion. This gorgeous commemorative design will be available for worldwide simultaneous pre-order and will printed ONE TIME ONLY. No reprints, ever!”
You can pre-order one of two limited t-shirts starting on Saturday. Pre-orders will be accepted until February 20, 2012. As is the case in Japan, the merchanise won’t ship until early May.
Pre-order the t-shirt(s) here.