I was a little shocked to read that a version of Megaman is coming out on WiiWare. According to the designers they want it to look and sound like an NES game, whether the game is actually written to be compatible with the NES hardware is another story we'll have to keep our eyes on, but it would seem unlikely. The bosses in the are your classic Megaman collection of randomness:

Magma Man, Galaxy Man, Jewel Man, Concrete Man, Hornet Man, Plug Man, Tornado Man, and Splash Woman.

Other information I skimmed from the Nintendo Power article says the designers are aiming pretty high, aka at Megaman 2 widely regarded as the best of the series on the NES. I'd say let's start with some more screenshots before we get ahead our selves. All in all tho, it's really cool Capcom is doing this, it goes to show though how much of a retro crowd is around enough to market something relatively obscure like this to.

Source: kombo.com