I believe Apple didn't use sapphire on the iPhone 6 because of a couple reasons 1) they didn't have to. As we saw the iPhone 6 sold out in no time at all. 2) historically when releasing a new product, the product needs to have unique features to gain interest.
I believe Apple will use sapphire in a product, which one, I'm not going to guess as I believed they were going to use Liquidmetal and sapphire in the iPhone 6. I was wrong with a lot of other investors (spectators).
Have you looked at the number of patents Apple has been assigned along with Crucible Intellectual Property? I believe it's very possible that we will see a malleable (flexible) sapphire in the future that is has a non-crystaline structure, therfore making it stronger than any other sapphire or glass on the market, incurring Cornings Gorilla Glass.
We shall see... I would like to hear anyone's thoughts on this.
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