I can almost guarantee that the Skyrim gameplay trailer that is being released tomorrow will contain the gameplay that was stated in the French Magazine. Almost all companies choose gameplay to showcase to reporters and such. The gameplay that will be shown tomorrow will be that quest which is given to you by a guy in a town, he wants his "golden claw" back. You get attacked by a giant frost spider and an some sort of ghost. The End. It will still be awesome though.
Check out the magazine for more details, link removed.