Probably the HD port of the Wii's PS2 port being ported to WiiU's eShop. Would make sense, as the title sold best on Wii, and the GamePad's touchscreen would make things a lot more convenient. Besides they already have got whole 2-screen setup thing working with Okamiden on DS.
Nintendo Network ID: Cheebee 3DS Code: 2320 - 6113 - 9046