I am happy to say Apple just approved my app that I've been working on for months :
I compiled with iOS6 SDK thinking that this would stop iPad 1's from being able to install it as iPad 1 doesn't support iOS6.
This didn't work. For some reason any iPad can download my app.
How can I get around this. My app isn't functional on iPad 1 ;).
You can require that a specific minimum version of iOS be on the device by modifying your app config xml file and adding the MinimumOSVersion key. For Example: