OP, did you get AppleCare+ on it? I think it was $99 at time of purchase and covers 2 screen replacements at $49 a piece.
According to this (http://store.apple.com/us/product/S4575LL/A) you can get it after the fact. Unfortunately there is no way to know if they will replace it for free out of the kindness of their hearts or not until you take it in at which point you will find out that it is $199 to replace the screen without AppleCare+.
According to this (http://store.apple.com/us/product/S4575LL/A) you can get it after the fact. Unfortunately there is no way to know if they will replace it for free out of the kindness of their hearts or not until you take it in at which point you will find out that it is $199 to replace the screen without AppleCare+.