Or it could just be this: http://www.apple.com/magicmouse/
Almost certainly.
Look at how much wrangling Apple have done over the iPhone's screen size; they're not just going to slap a curved display on it just because marketing says it's a differentiator.
That's just not how Apple rolls. If it doesn't make sense, they don't do it. When was the last time Apple came out with a product that didn't make sense?
So wait...apple wants to patent curved glass?
The new Mac Pro being a cylinder. Totally nonsensical.
Close. It's thin glass with a circuit pattern on it before it's molded into a curved shape.
Which begs the question of how everyone else does it now. Just bend it? Add the circuit pattern after molding? Use another method than annealing?