Late Wednesday, Apple released Boot Camp Software Update 3.3, an update which offered revised Windows support for Macs running Boot Camp 3.x, included as part of Mac OS X 10.6 Snow Leopard. Apple only notes that update supplies “critical bug fixes and hardware support.”

This update is targeted at users running Windows 7 in either the 32 or 64-bit version via Boot Camp 3.2 on Snow Leopard.

Macs running 10.7 Lion do not need the update, as that version (Boot Camp 4) can upgrade itself. Users running Boot Camp 3.2 can download the new package through Software Update or from Apple’s download page.

The update also offers specific support for the ATI-Radeon HD 5870 graphics card, Apple USB Ethernet Adapter, MacBook Air SuperDrive, and addresses critical bug fixes.

That update addressed users of Windows XP, Vista or Windows 7 running BootCamp 3.1 on Snow Leopard.

If you’ve installed the update and noticed any changes, please let us know in the comments.