Matt writes in with the official link that Steve Jobs will keynote at MacWorld Tokyo:
http://www.idg.co.jp/expo/macworld2002/en/20020304.html
IDG today announced that Steve Jobs, Apple's CEO, will deliver the opening keynote address at Macworld Tokyo 2002, the largest Macintosh event in Japan. This year's Macworld Tokyo will take place at Tokyo Big Sight March 21-23, 2002, and the keynote is scheduled for Thursday, March 21 at 9:30 a.m.
Whether or not it is to be webcast is not yet clear...