Microsoft already officially launched Windows XP Service Pack 3 (SP3) and is now available for download through Windows Update.
According to Microsoft "Windows XP Service Pack 3 (SP3) includes all previously released updates for the operating system. It also includes a small number of new functionalities, which do not significantly change customer's experience."
I haven't downloaded the update yet, maybe later or earlier tomorrow. Anyway, if you are using Windows XP regardless of the edition (Home, Media Center, Professional, Starter Edition, or Tablet PC Edition), feel free to download the update from free. For more details, click here.