Hi list,
after some discussion on #IRC on PowerPC I was waiting for some commitment on supported architectures in RHEL 6. As I just learnt, Itanic will be dumped, but there will be a PowerPC release:
http://www.theregister.co.uk/2009/12/18/redhat_rhel6_itanium_dead/
Best,
Timo (happy PowerPC enthusiast :)