Apple’s iTunes Remote app…

“The Apple Remote (iTunes link) was last updated in November of 2009, to fix bugs associated with Apple TV 3.0 and iTunes 9. It has not been given support for iOS 4, including multitasking, or the retina display of the iPhone 4.”

AppleInsider | Apple’s iTunes Remote app was developed by one person – report

More importantly. Why is there no iPad version?