Currently Being ModeratedMar 8, 2013 11:56 AM (in response to philhuett)
It is not false advertising but it is app dependend though; i.e. an app can take advantage of your whole 16:9 real estate like Real Racing or Apple Video app while others app may not have been designed for that. Most video playback apps will be full screen.
Mirroring your iPad app pages will be in 4:3 as it is the aspect ratio of the iPad. It wouldn't make sense to present wider pages as it wouldn't match what you are seing on your iPad.