Well, as you may well know, the iPad and iPad 2 have not had Full HD video playback -although on the iPad 1 it is a utopia to think that it can play it-, but with the arrival of iOS 5 that will end.
Apple allows in this new iOS to synchronize videos in Full HD without problems with the iPad 2 and play them, According to some beta testers who have done quite satisfactory tests, have been able to comment.
Of course, then everyone sees the sense of playing a Full HD video on a 1024 x 768 pixel screen, but it can be done. Did someone say iPad 3 with Retina Display?
Source | 9to5Mac
This is very good because if you mirror with the TV it will scale it to 1080.
For your information, I play 1920X1080 video on the Ipad 1 without problems… guess how? With IFILE! (= jailbreak). Which shows - for the umpteenth time - that Apple greatly limits the capacity of their devices, in order to get the most out of the consumer - read iTunes store, etc - charge a fortune for their devices, and undermine the famous »user experience »… Bunch of dictators!