FC4 feature list?

[Kenneth Porter]

I want to draft an explanation to higher-ups about what benefits come from 
upgrading a server to FC4 (aside from the basic one of getting the latest 
of all included packages). FC3 came with targeted selinux (and for 
workstations, a new KDE and Gnome), according to the "Overview of this 
Release" section of the release notes at 
<http://fedora.redhat.com/docs/release-notes/fc3/x86/>. Is there an 
equivalent list of important features of FC4?

In effect, I'm looking for the executive summary that we'll see in the 
trade papers next week.