Contradicting a few days ago, according to The Channel Insider, Microsoft will be releasing some IE patches for non-XP systems.
…But company officials privately told a select group of developers earlier this year of plans to port some of the IE-specific fixes to the version of IE 6 for Windows 2000 (Service Pack 5 update).
It also told some partners that it was “considering strongly” the idea of making the IE-specific SP2 fixes available for Windows NT, Windows 98, Windows 98 Second Edition and Windows Millennium Edition.
[Source: The Channel Insider | Emphasis mine]