Windows XP SP3 released! Please download from here (2008 May 06 updated)
Windows XP SP3发布了！ 微软在2008年5月6日发布了SP3的第二个版本。下载地址如下：

Windows SP3 download URL here

You don’t need to install SP1 or SP2 before you install SP3. Because SP3 has included all proceeding changing.

单独安装SP3，可以不需要事先安装之前的SP1和SP2，因为SP3中已经保护了前面的所有改动，而且，据微软称，SP3是Windows XP的最后一个SP包，之后不再发布XP的SP，可能全力去搞Vista或之后的Windows 7。

Windows® XP Service Pack 3 (SP3) includes all previously released updates for the operating system. This update also includes a small number of new functionalities, which do not significantly change customers’ experience with the operating system.