Just FYI .. right now there isnt really anything ready for "users" as a result pretty much all discussion is happening on the dev list:
symfony-...@googlegroups.com
So if you are interested in the on going development and internals subscribe here as well:
http://groups.google.com/group/symfony-cmf-devs
regards,
Lukas Kahwe Smith
m...@pooteeweet.org