Apple has released two EFI updates for its latest MacBook Pros. The MacBook Pro Retina EFI Update v1.3 update is recommended for late 2013 13-inch Retina MacBook Pro models. It addresses an issue where the built-in keyboard and Multi-Touch trackpad may become unresponsive.
The MacBook Pro Retina EFI Update v1.2 update is recommended for late 2013 15-inch Retina MacBook Pro models with NVIDIA graphics. It addresses a rare issue where the performance of the discrete graphics processor may be limited after a restart or waking from sleep.
Updates for either machine can be downloaded via Software Update in OS X.