I looked at the katakana all over the page and found no name for the dude. So he's "unknown" at this point. As for "RE4 engine", it refers to the gameplay perspective, not graphics.
Personally, I think it's too early for #5. So I guess Capcom's done with its individual, carefully made RE4 (thank you Mikami-san), and has got tons of empty buckets waiting for the RE5-Cow to get to work.