Xen has been updated to 3.0.4 minor release, considered an interim before 3.0.5 planned for early 2007.
This new version improves support for SMP and ACPI in Linux and Windows OSes, as well as other features:
- support for kexec/kdump of Xen and domain 0
- graphical framebuffer support for paravirtualised guests
- preview support for the new XenAPI management interfaces
- enhanced support for IA64 (IPF) and Power systems
Download it here (still not available at the moment of writing).