The most awaited Service Pack 3 have been released on April 21, 2008 it may be late for the my topic to post. But I have a good news the release was RTM version or Manufacturers version. For us End Users can avail this SP3 on April 29, 2008. For those who can't wait you might google for it, I'm not giving any links to download them. Because some reputable cracking group has release it to the "Scene".
Here's the name: MICROSOFT.WINDOWS.XP.SERVICE.PACK.3.v5.1.2600.5512.RTM.ENGLISH-WZT
Here are some information on the Windows XP Service Pack 3 setup file:
# Filename: WindowsXP-KB936929-SP3-x86-ENU.exe
# Language: English Only
# Size: 331,805,736 bytes in 1 file
# SFV: C411A9DA
# MD5: BB25707C919DD835A9D9706B5725AF58
# SHA1: C81472F7EEEA2ECA421E116CD4C03E2300EBFDE4
As Microsoft said this release don't have additional features that may add new functionality in your Windows XP OS. This release has only security features and some bug fixes and stability upgrades.
Click here for the full list of fixes
For some information, heres the link of the source: http://www.raymond.cc/blog/archives/2008/04/23/download-microsoft-windows-xp-service-pack-3-rtm-final/
From Microsoft: http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=3214173&SiteID=17
Download it's an official link: Download here