updated 05:51 pm EDT, Fri July 27, 2012
Firmware update brings cloud functionality
A firmware update released today has enabled the Power Nap feature to Apple's Retina MacBook Pro. The update follows a similar patch released yesterday for the MacBook Air. The update also fixes several sleep/wake issues and improves stability for Retina MacBook Pro models.
Power Nap enables SSD-equipped notebook Macs to sync and carry out other routine tasks without waking from a sleep state. PowerNap-equipped notebooks can back up to Time Machine and synch to iCloud thanks to the new feature. The feature also enables VPN on demand, Find My Mac, and corporate configuration profile updating, all while a notebook is sleeping. In order to preserve battery power, Power Nap will not activate if a machine's charge is at 30 percent or lower.
The new update for Retina MacBook Pro models is available at Apple's site, as are updates for 2012 and 2011 MacBook Air models.