In addition to the OS X 10.8.3 update, Apple has also issued an update for the Retina MacBook Pro. The MacBook Pro Retina SMC Update v1.1 update addresses two major issues owners have been complaining about, including a rare issue where users may experience slow frame rates when playing graphics-intensive games on the 15-inch MacBook Pro with Retina display.
Perhaps most importantly Apple says the update addresses the fan speed issue we reported on earlier this week. It also includes bug fixes for Power Nap and wake from sleep. MacBook Pro users can access the update via Software Update.