This morning I thought I'd start on building Compiz 0.9 for Rawhide (Fedora 15) as a nice little weekend project to spend an hour or two on. Sixteen hours later...I've kind of finished.
Want to try Compiz 0.9 (actually, a bit past 0.9.2.1, and using the glib-mainloop branch of compiz itself, which is needed for Unity and will be merged into master at some point soonish) on Fedora Rawhide (15)? Stick this repo config file in /etc/yum.repos.d/ , install (or update) compiz-gnome , and run 'compiz-gtk --replace' , and Bob ought to be your uncle. It should work from desktop-effects too but there seems to be some kind of bug - you run desktop-effects, click on Compiz, it starts up perfectly happily, then desktop-effects claims it didn't actually start up so it's going to revert to the previous configuration, and promptly muffs everything up. It also seems to be using some fallback Metacity theme, not quite sure why. Aside from that, it seems to work pretty well for me. There's a ccsm package you can install and run to configure compiz (and changes you make in ccsm should actually apply and save...unlike how it's been in Fedora's compiz for ages).
We (myself and Adel, the main compiz maintainer) would quite like to put this into Rawhide itself if it turns out to work well enough and stably enough, so do let me know how you get on, via email or in the comments. The packages are signed with my redhat.com GPG key - key ID C1365CF0. Good luck! And of course, if it breaks, you get to keep both pieces.
I could build this for F14 quite easily, I just haven't bothered yet. I might get around to that tomorrow. Or not.