Any of you guys download this?

 Update: Apple has posted the official changelog. Here are the highlights:

• Improves the reliability of AirPort connections, including improvements when roaming in large wireless networks with an Intel-based Mac.
• Improves reliability of Address Book syncing with iPhone and other devices and applications.
• Includes general improvements to gaming performance.
• Includes fixes for possible graphics distortion issues with certain ATI graphics cards.
• Contacts, calendars, and bookmarks on a Mac automatically sync within a minute of the change being made on the computer, another device, or the web at me.com.
• Improves Apple File Service performance, especially when using a home directory hosted on an AFP server.
• Improves reliability and performance for AT&T 3G cards.
• Improves printing for USB-based Brother and Canon printers.
• Fixes issues that could cause Time Machine to state the backup volume could not be found.
• Improves Time Machine reliability with Time Capsule.
• Adds a Trackpad System Preference pane for portable Macs.
• Personal Engadget favorite: Improves the performance and reliability of Chess.
• Nary a mention of Blu-ray. It's still hurting, we guess.

....

http://www.engadget.com/2008/12/15/mac-os-x-10-5-6-now-available-via-software-update/