Capcom is adding some kind of touch screen control system and RPG-ish character customization, and has also implemented first-person aiming for weapons, during which you aim with the analog slider. Director Kazuhisa Inoue said that this change allows players to experience the 3D visuals as if they were really there -- as if they were really surrounded by monsters. How nice.
Revelations is earlier in the development process -- just 20%. According to Famitsu's feature, it takes place on a cruise ship between the events of RE4 and RE5. It's meant to combine the exploration of pre-RE4 games with the combat in the later Resident Evils. Director Koushi Nakanishi says that with limited ammo and creatures emerging unexpectedly, it's a real "survival horror" game.