I followed the info from this topic for free Incredibles HD:
http://slickdeals.net/f/6743480-the-incredibles-itunes-digital-download-free
I joined disney movie rewards with iTunes, and noticed Incredibles didn't start downloading (I have the SD version). So I went to purchases/movies/all, and I found that I can download not only Incredibles, but most of my disney digital copies in HD now! Which includes movies like Avengers, Iron man series (Iron Man 3 was HD as a digital copy to being with), Thor, Captain America, Prince of Persia, etc..
http://slickdeals.net/f/6743480-the-incredibles-itunes-digital-download-free
I joined disney movie rewards with iTunes, and noticed Incredibles didn't start downloading (I have the SD version). So I went to purchases/movies/all, and I found that I can download not only Incredibles, but most of my disney digital copies in HD now! Which includes movies like Avengers, Iron man series (Iron Man 3 was HD as a digital copy to being with), Thor, Captain America, Prince of Persia, etc..