Even though I vowed I was getting out of the date-prediction business — at least when it came to Windows XP Service Pack (SP) 3 — I’m breaking my promise. I am hearing from reliable sources that Microsoft is planning to announce the release to manufacturing (RTM) of XP SP3 tomorrow, April 21.

That is the date that Neowin and a couple of other sites recently said was the latest ship target for Microsoft’s latest catch-all update to XP. According to Microsoft’s alleged internal timetable published by NeoWin, Microsoft planned to deliver the final XP SP3 bits to OEMs, volume licensees, Connect testers, and Microsoft Developer Network (MSDN) and TechNet subscribers on April 21. Neowin said Microsoft planned to make SP3 available via Microsoft Update, Windows Update and the Download Center on April 29 and to push it out via Automatic Updates on June 10.

Source: All about Microsoft