Is there an update required for MAC OS X?

Q: Is there an update required for MAC OS X? I know this chat room is only for Microsoft product but appreciate any help.
A: For more information on impacted Microsoft products for the Mac OS such as Entourage, please see blogs.msdn.com/mthree/archive/2007/01/13/your-questions-what-about-mac-office-entourage-and-daylight-saving-time.aspx