iSync, Quark, 10.2.1
A large iSync banner is pictured in one of Pre-Apple Expo photos...
eWeek had heard of a possible surprise Quark demo... which was vigorously denied by Quark's Communications Manager.
...and Seagate's Travan Drive Support Page lists support for Mac OS X 10.2.1 or greater. Mac OS X 10.2.1 has not yet been released.