Angular Universal depends on Angular 2, which is not officially released yet (at the moment of this post) so, you have to probably wait for the official version to come out before starting a new project with Angular 2 because of the breaking changes during the RC releases and possible bugs.
Good luck to those who already use Angular 2 in production. They'll have a fun time refactoring code when a new RC / official version is released.
I still think it's too early for people to start working with it, but that's just me.