iTunes extras finally on Apple TV

[BRH]

This is a game-changer for me. I'll still buy Blu-rays, as I love the physical format. But I'll probably now buy a lot more iTunes content (early releases especially) and wait for the inevitable steep price drop on the Blu.

One question (hopefully it hasn't been asked yet), do you only get the iTunes Extras for movies you BUY on iTunes (and not for those which you added to your iTunes collection via Blu-ray digital copy redemption)? I'm looking at some titles in my collection on my Apple TV 3 and seeing no extras listed. These are titles I thought came with extras when I originally redeemed the DC (specifically Uni titles like "Admission" and "About Time"). A couple of other titles I bought on iTunes ("Gravity" and "Argo: EE") are showing the extras.