IBM announced it; in april! Just wait for 2005;
in serious, it has not yet been decided (and my company [Bull] has
finished the SMP part for the old RS/6000 = Bull Escala systems) whether
linux will be fully supported on the old AIX work stations. But look a
http://www.rs6000.ibm.com/france/linuxexpo.html
It's french but they cn tell you more ...