Yes, that version of Resident Evil 4 on the iPhone is real. And it's coming soon, with Capcom hastily scrabbling together a release date timeframe following the game's accidental reveal earlier this week.
The game will be out on the Japanese App Store towards the end of this month, with the "rest of world to follow shortly thereafter". No details were provided on pricing, or just how much of the console game has made the jump to Apple's handheld. Sorry.