At least I think this is new:
Great Ambience
Even when its sleeping, iMac thinks about whats best for you. In low-light environments, a sensor detects the rooms ambient light and adjusts the sleep light to match so you and your iMac can both catch some Zs.
From the design section of Apple's iMac page.
Great Ambience
Even when its sleeping, iMac thinks about whats best for you. In low-light environments, a sensor detects the rooms ambient light and adjusts the sleep light to match so you and your iMac can both catch some Zs.
From the design section of Apple's iMac page.