Some 4.14 questions:
1) Now that 4.14 is released, will you give us a shout
here when the RPM's are ready
Yes. I will.
2) how can we check what the current revision is that
we are running? "rpm -qa xfce4\*" perhaps?
rpm -qa xfce4* should work. All the core packages (except Thunar) will be version 4.14.x.
xfce4-about should also be updated to show 4.14.
3) will you spin an new Fedora 30 Lie ISO?
Not officially. I have no experience with making images either.