Thanks Bunnios...usa_1069_csd_wxpsp1.iso, 289.09 MB. Why so big? Well on MSDN the sp1 build 1050 iso was posted which had the size 235.55 MB and contained support folder and the valueadd folders just like on WinXP CD. Only the support tools were updated with new versions of May 2002. What the OEM has extra don"t know yet, maybe some OEM builder tools, eHome stuff (Freestyle) or Tablet PC.
Also news just in is that build v1073 has also leaked from Microsoft its 121mb but, not much is known about this version yet. I"ll post more info when we get it
News source: Bink Windows XP
Download: XPSP1 v1073 @ Driver Heaven