“Unlike the transition from the PlayStation 2 to PlayStation 3, Naughty Dog will not be rolling out a brand-new engine for its games on the PlayStation 4. The developer has chosen to instead continue to use the engine that it has built The Last of Us and the Uncharted series on.”
Link: http://www.gamernode.com/naughty-dog-to-keep-uncharted-last-of-us-engine-for-next-gen/
Mike Murphy 