Looking at the improvements for over core3 (http://fedora.redhat.com/docs/release-notes/fc4/#sn-new-in-fc) I see
Improved Security â SELinux is a security architecture that protects applications and uses through finely grained security controls. The targeted policy that has been active since Fedora Core 3 has been improved to cover dozens of more daemons.
Built-in Virtualization Xen is a virtual machine that can securely run multiple operating systems in their own sandboxed domains. Xen has been integrated into Fedora Core to work in a seamless fashion.
I may not wait so long to cutover (I usually give an FC# release a few weeks before going to it)..
ping, just because...
Techie Pingie
Is Fedora recognized as Enterprise Linux by Oracle ?
I'm DL'ing it as we type!
Does it have the latest Nivida drivers for DVI attached LCD's?