Apple upgrades the iMac

• Officially called the iMac with Retina 5K display
• The screen uses a new material, oxide TFT
• It has borrowed tech from the Retina iPad
• The panel is also as bright as the previous model, but uses 30% less energy
• It has the same design as the past couple of generations of 27-inch iMacs
• If you're a photo or video professional, it's certainly worth a look
• It is shipping for $2,499