I am making a universal app for the first time and I am wondering with the iPad if I need to include an @2x version of all my graphics like I do for iPhone apps or does the iPad not support that? i.e. if my background image is 1024 x 768 do I need a 2048 x 1536 @2x version?
Thanks
No, you don't.
But you might need it soon ;)
http://deallocatedobjects.com/posts/ipad-retina-images-found-in-itunes-u-and-ibooks-2-files