Microsoft released this Windows 2000 Update Rollup Announcement last week:
To make it as easy as possible for customers to maintain the security and stability of their Windows 2000 systems, Microsoft will produce an Update Rollup for Windows 2000 Service Pack 4 (SP4), with a planned release in mid-2005.
The Update Rollup will contain all security-related updates produced for Windows 2000 between the time SP4 was released and the time when Microsoft finalizes the contents of the Update Rollup. The Update Rollup will also contain a small number of important non-security updates.
No more service packs for Windows 2000. And while it is still an excellent operating system, it’s beginning to show its age. By the time this update is released, Windows 2000 will be more than six years old.