The evidence that Capcom are porting Resident Evil: Revelations to Xbox 360 (possibly other platforms as well) is mounting. The latest piece of evidence comes as Exophase has published a full list of achievements from the game indicating a full retail release.
Capcom haven't said anything officially, but it was rumoured back in November when the game was listed in connection with Korean age ratings.
Resident Evil: Revelations: Unveiled Edition is far from a done deal, but it should come as no surprise if Capcom would port the game as they typically don't keep Resident Evil titles exclusive for long.