Parallels has updated Parallels Desktop to build 5600.  With the update, the company has added full support for Windows Vista SP1, Windows XP SP3, and improved compatibility with the MacBook Air.

Parallels Desktop users get this update for free via the auto-updater.  If you aren't using auto-updater, you can still download it manually.

You can also download a free 15-day, fully functional eval copy. Download your update or get a trial copy here.

Major features and updates in 5600 include:

• Full support for Microsoft Windows Vista SP1, including Boot Camp support
• Full support for Microsoft Windows XP SP3, including Boot Camp support
• Full compatibility with the MacBook Air
• Shared Folders improvements: Improved file transfer speed for SmartSelect, and the ability to share files and folders to/from removable drives
• Minor bugfixes and performance enhancements

More information on the update (including a full list of all of the new stuff in this build) is available at the Parallels Desktop Main Page.