Apple's premier glass supplier is Corning and Apple's iPhone has been using Gorilla Glass from day one. On page 472 of Steve Jobs by Walter Isaacson, we read: "We produced a glass that had never been made," stated Corning's CEO Wendell Weeks. This is what Steve wanted for the iPhone and so it's highly unlikely that they'd easily switch suppliers. Perhaps in the not too distant future Corning could consider manufacturing a new type of glass that seems to be the next big thing in glass. This next generation of glass is made from sapphire crystal.