Warner Brothers France have revealed that a premiere for Half-Blood Prince will be held in the country on July 12th, in Paris. As of yet we do not know the venue for the event and as some of the cast have already promoted the film there, none of them will attend the screening.

Thanks to Steve for the tip!

UPDATE: The event will take place at the UGC Cine Cite Bercy and will begin at 9:30am. Thanks to UHP for the info!