If you haven't had the opportunity to read MuggleNet staffer Nick's excellent report on Warner Brothers Studio Tour - The Making of Harry Potter, you can read it right here.
However, the Warner Brothers website for the Studio Tour has now been updated with even more details and information:
Digital Guide - (available in eight languages) contains fascinating facts about the sets, costumes and props, along with unseen, behind-the-scenes footage and interviews with the cast and crew. Must be Pre-ordered with booking.
Souvenir Guide - In-depth information about the films, including behind-the-scenes secrets and photography.
Photo Opportunities - Visitors will be allowed to take personal photographs and are given exciting photo opportunities throughout the tour (no tripods or video will be permitted).
Additionally, the BBC has released their set visit report, which includes a video that you can view right here. The video includes a look at a few props, creatures, the magical stirring cauldron and dish pans being washed from the Weasley's sink, and a few of the sets like the Great Hall and Entrance Hall.
Thanks to Hypable for the tip.