Will Microsoft Offer XP SP2 Security to Older Windows?

That is the question on everyone’s mind. There are a lot of security enhancements for Internet Explorer. A lot of shops haven’t seen the compelling need to upgrade to Windows XP from Windows 2000. But these new security enhancements for XP sound enticing.
Windows 2000 is heading toward maintenance mode, which means patching only. Given limited development resources, it is better to spend those resources on Longhorn and XP sp2, not trying to shoehorn it into previous versions.
An eWeek article says that this is still up in the air right now. It does say it is highly likely the Internet Explorer security enhancements will be part of Service Pack 5.