Apple has released a new update for their most recent MacBook Air and MacBook Pro models (released in June 2012). Update 2.0 is intended to offer graphics performance improvements, as well as USB compatibility improvements.
About MacBook Air and MacBook Pro Update 2.0
This update includes graphics performance and reliability enhancements and improves compatibility with some USB devices.This update is recommended for all Mac notebooks introduced in June 2012.
The update weights in at 127.02MB, and is available immediate through Software Update on compatible MacBooks, as well as for direct download from Apple’s support website.