Teaser link is up, though i can't find data on whether it's fake or not.
Looks to be 2.5D, and a similar style to the Adventure Island and Bonk remakes, in terms of color scheme.
EDIT: According to DomainTools, this site was registered August 21st, so it couldn't be something somebody whipped up in the last couple of hours for lulz.
Monster Hunter: pissing me off since 2010.