http://xbox360.ign.com/articles/638/638042p1.html
Updated.
Capcom is working to make the game run at a smooth sixty frames per second, twice the frame rate of the GameCube Resident Evil 4. According to Takeuchi, this will allow for some gameplay situations that could not be achieved in a thirty frames per second game, and he points to this as evidence that the game will indeed have a strong action component.
This was touched upon in our original story on the game, but one area the development team is hoping to focus on with Resident Evil 5 is giving players a sense of the surrounding atmosphere through visuals. Heat and cold are key words for Resident Evil 5, Takeuchi reveals, with the game's visual engine being able to clearly express changes in temperatures. This focus on heat and cold came about as the development team considered things they wanted to do using high defintion output. Takeuchi feels that his team has been able to create a sense of atmosphere that was previously impossible through standard definition.
Updated.