Microsoft has announced that Windows XP Service Pack 3 has have been RTM.  This means that OEM providers and Enterprise customers will be getting it in the next couple of days, while it is due to be released via Windows Update & the Microsoft Download Centre on April 29th.  A PDF with an overview of the contents of the Service Pack is available.

This is a much smaller update than the previous 2 SP releases, especially SP2 which added a lot of functionality, especially security.  According to the PDF

With few exceptions, Microsoft is not adding Windows Vista features to Windows XP through SP3. As noted earlier, one exception is the
addition of NAP to Windows XP to help organizations running Windows XP to take advantage of new features in Windows Server 2008.

(more…)