At some point this year I'm hoping to upgrade from my 2009 17" Macbook Pro and am targeting the 15" Retina Macbook Pro. I'm just wondering if anyone has any idea of when they may be refreshed this year? As I'm at university I know I can get education discount, and that they also run a 'back to school' promotion throughout the summer. Is it likely that they'll refresh the Retina Macbook Pro's before August/September? Just wondering when it'll be best to buy! Thank you!