HBP dvd out in Dec?

Harry Potter and the Half-Blood Prince DVD. Apparently the DVD is set to be released during the holiday season in December, 2009 "on 1-Disc, 2-Disc, and 3-Disc DVD/Blu-Ray combo versions." Even more interesting is the reports say this DVD may possibly, and we stress possibly, contain several sneaks previews or some sort of trailer for Harry Potter and the Deathly Hallows.