This has been a long time in the coming. The marvelous localization masters at XSEED have seen fit to bring Pandora's Tower to North America this Spring. While that's awfully vague, a GameStop listing has a more specific date in mind. According to the retail behemoth, this hotly anticipated action role-player will be available March 26th, 2013 for $39.99. Oh and they're taking pre-orders, because of course they are.
That's far from an official confirmation, mind you. Retailer listings aren't always correct and dates certainly are subject to change. That said, these types of things generally have a ring of truth to them.
GameStop - Pandora's Tower preorder page open [GoNintendo]