Apple has released a Software Update and EFI Update for the MacBook Pro.
This update includes fixes that improve graphics stability, address issues with external display support and 3D performance, and improve Thunderbolt device support.
Boot ROM or SMC Version Information: After update OS build version = 10J4138
This update includes fixes that resolve an issue with Turbo Mode in Boot Camp, and improve performance and stability for graphics and Thunderbolt.
[ Via support.apple ]