We registered the french impresscms.fr domain a few days ago, given that French is our second-biggest language group by user.
Having local domain names fits our strategy as being a multilingual content management system. It also is a first step in providing language or location specific content to our users in the mid-term.
At the moment, the http://impresscms.fr address still points to the main project site. We are looking into the best way to make this an entry point for and by our users in France. That means translations, separate core downloads, french forums.
If you speak French and want to help out, don't hesitate to say so in the comments.