Amazing!!!! What was once the centerpiece of ML's marketing campaign on Apple's website, now (after website's update) is completely gone off the main page. Airplay feature is now tucked in under the feature page only - with a tiny greyed-out notification at the bottom of the page mentioning AP works only with machines offered from 2011. I sure as h*ll don't remember any fine-print up until yesterday! Nice Apple! Real nice! For a lousy 20 bucks now, you pretty much have made me think twice about forking over $ 2500+ in a few months for a new laptop. The ONLY reason, and I mean the ONLY reason, I paid for ML was to utilize the AP feature - and I was super-excited. Could careless, about ALL other features of ML.
Aside from the underlying reason, whether it's the chipset encoding H.264, copyright issues, or what have you, Apple could have made the RESPONSIBLE choice and shed some light on the matter. But no! It all came clear after it was too late.
I, as it appears like most here, want a refund.