In addition to today's iMac Graphic Firmware Update 3.0, Apple has released Boot Camp Software Update 3.3 for Windows. Boot Camp allows users to run Microsoft Windows natively on their Intel-based Macs.
The update is recommended for all Boot Camp 3.2 users and contains critical bug fixes and hardware support. The update weighs in at 199.75 MB and requires Windows 7-32 bit or Windows 7-64bit and Boot Camp 3.2. A direct download link to the update is here.