广受关注的Windows XP SP3 RTM 最终发布时间已经确定，第一批将在四月的下半月发布，其中包括简体中文版。
Windows XP Service Pack 3 包含一系列补丁和更新，并将提供针对Windows XP的序列号扩展，SP3版本将不会发行内置在Windows XP Media Center Edition 或 Windows XP Tablet Edition中的版本，它们需要执行更新才能升级。和Win XP SP3分为两“波”发布，具体时间表如下。
Wave
Languages
Planned RTM
1
Chinese (Simplified), English, French, German, Japanese, Korean, and Spanish
Second half of April 2008
2
Arabic, Chinese (Hong Kong), Chinese (Traditional), Czech, Danish, Dutch, Finnish, Greek, Hebrew, Hungarian, Italian, Norwegian, Polish, Portuguese (Brazilian), Portuguese (Portugal), Russian, Swedish, and Turkish