Hi-Res images spotted in latest Messages Beta hinting at Retina Display Macs.
The first Apple Macs with a retina display are likely to be released this year. The resolution of a Retina Mac would be 2,880x1,800px. My 27-inch iMac has a resolution of 2,560x1,440px. On the big displays the increased resolution will not make such a big difference. On a 15-inch MacBook Air a 2,880x1,800px resolution would be extremely beautiful.
MacRumors found a hint the just released Messages Beta for Mac app suggesting that Retina Display Macs are near. Additionally images are stored with a "2x" moniker in the filename. This is similar to iOS.
Apple is likely making Retina Display the key feature of the rumored revamped MacBook Pro laptops. As reported, Apple is supposed to adopt the MacBook Air design for the professional line.