Windows XP Services Pack 3
Windows XP Services Pack 3 (SP3) copy has been quietly send to a small group of tester by Microsoft. According to the NFO from WinBeta, this XP services pack 3 is considered a pre-beta release only and this pre released is 5.1.2600.3180 (xpsp.070718-2058) build.
Meanwhile, The file size of XP SP3 will be lesser than 350MB and this Windows Services Pack 3 able to fix 900 over reported problems, some of the windows problems perhaps have already been resolved through Windows Update.
However, Microsoft Services Packs roadmap that i see say Windows XP Service Pack 3 will be available on Q1 Year 2008. if you thinking download Windows Services XP Pack 3, check around the torrent network and you might get pre-beta release of windows xp services pack 3 copies too.
Source: WinBeta & AeroXP