The impressive Epic Citadel demo we got to explore using Oculus Rift's incredible virtual reality development kit will ship alongside the headset this March, the company tells Engadget. "Any content you can load into UDK [Unreal Development Kit] and Unity, you can load and explore with the Oculus dev kit," we were told, in addition to the Citadel confirmation. And beyond that, Oculus is providing, "development showcases" alongside the dev kits, though it's unclear exactly what that means. We'll no doubt hear