Well that hope was short lived.
"Luigi nonchalantly turns up about 20 stars in and offers his services at random points throughout the game, which is a good thing because it means you don't have to get all 120 stars to play as him this time. What's the reward for doing so this time around? Come on, we're not telling you that!"
As you can see, we're not saying there's another playable character at all, just that the reward isn't the ability to play as Luigi.
Hope that clears things up!
Official Nintendo Magazine UK
Lame/no surprise pretty much confirmed then. What a waste of hopes, as always.
Fucking ONM.( Edited 10.05.2010 17:51 by SuperLink )