Dumb question about deployment to iPad3

[Graham Samuel]

I have an iPad app in development which worked pretty well in earlier versions of LC and XCode and which I can run in the iOS 6 simulator as iPad only, Arm7 only. But I don't see how to simulate the Retina Display (double the number of pixels) of the iPad 3. It appears that what I am simulating is an iPad 2 - certainly the simulator is using my original splash screen designed for the old iPad resolution and not the new one I prepared.

This has got to be obvious, but what do I do to see the Retina Display simulated? I don't have a real hi-res iPad to test on.

TIA

Graham