Paper Mario worried me when I first saw it, because I thought it might be simplified (not just on outward appearances, but some of the early promo videos made it look VERY child-oriented) and not very faithful to the original, but Intelligent Systems did a very good job with it, and it almost referenced ideas from the original Mario RPG a little TOO much. ^_^; Almost.
Shame this is a fake, I wouldn't count on a new Mario RPG being announced this year. But hey, I wouldn't complain if it WAS...