There is also no sleep indictor light (the pulsating white light) -- it all much like the MacBook Air. The new Retina MacBook Pros support the "Deep Sleep" mode for 30+ days of sleep/hibernation. Apple's thinking on this was that by including these lights, it would drain the battery.Also, it's possible that because of newer battery configurations like the MacBook Air (which does not have a battery indicator light), that it was decided this was not necessary for the Pro either. The sleep indicator, however, definitely drains battery and it was good Apple did not include this, to maintain the 30+ day hibernation mode capability.