On the atari support page.
http://www.atarisupport.com/newfaq/c...play=DOWNLOADS
Note: It will never appear at
www.civ3.com since it is supposed to be a beta patch (has not passed Atari's QA tests yet).
Some sort of Chrismas gift to Civ3 community (since final official patch is in fact planned for Q2 next year).