The next-gen game engine was being shown off at GDC 2013 with a flashy new demo (seen below the break), as well as a version of its "Elemental" demo running on a PlayStation 4 dev kit (shrouded behind a curtain, of course).
At 88 grams and just 6.1mm thick, it's also shockingly thin and light -- of course, the anodized aluminum backing makes it feel like a premium piece of kit.