I'm proud to announce that the early adopter of everything, Fedora Rawhide, has just received an Eclipse built with Tycho.
The adoption was rather painful, and there's still a lot of work to be done, but hey, that's the first Eclipse Platform CBI adoption*!
If you dare, test it.
sudo yum --enablerepo="rawhide" install eclipseAll bugs should be reported to RedHat bugzilla, because they will cover packaging issues, not issues with Eclipse itself.
*That I am aware of.