12-inch Retina MacBook now expected in late Q3 or 2015 as new 11 & 13-inch Airs enter production - 9to5Mac
Amazon.com: UESWILL Matte Hard Shell Case Cover Compatible with MacBook Pro (Retina, 13 inch, Early 2015/2014/2013/Late 2012), Model A1502/A1425, No CD-ROM, No USB-C, Black : Electronics
Differences Between Mid-2014 and Early 2015 Retina MacBook Pro: EveryMac.com
First ['13] Retina MacBook Pro (2012) VS MacBook Pro 14 Inch (Side By Side) | MacRumors Forums
2012 vs 2014 MacBook Pro 15.4" Retina Display (Should You Upgrade?)
Differences Between Late 2013/Mid-2014 Retina MacBook Pro: EveryMac.com