Huw over at Brickset
snapped some pics of the newest polybag set 30059 MTT. As of now, it's only available in Japan but hopefully they will make their way to other parts of the world. For us in the US, I'm going to take a wild guess and say it'll either show up at Target or Toys'R'Us stores. But like other polybag sets to cross international waters, it may be months before we see it again. Still, if you're itching to buy, check out Bricklink
and you too can pay an arm and a leg for it.
Thanks to ninnymuggins for the tip.