Oh, I remember when those images were originally posted. They're getting rather old by now.
I don't think they were specifically advertising any so-called "RR" movie though, but basically promoting the property like the rest of the pictures have done. Almost nothing had been announced back then other than their intention to make more Code Geass, and certainly nothing about the supposedly upcoming movie.
Still...all the promotional artwork is basically just a way to give fans more pretty posters and magazine spreads of their favorite characters without actually having any influence on the story, regardless of how the ending can be interpreted or followed up.