AAAGGGHHHH!!!
First, the Malfoy Manor fireplace is going to be expanded so it shows the full headquarters of the Death Eaters, which you saw in Harry Potter and the Deathly Hallows – Part 1. Charity Burbage will be suspended above it AND NAGINI WILL BE SITTING ON THE TABLE.
There'll be a whole bunch of props from Borgin and Burkes which have never been seen before. You can see the Hand of Glory, the Vanishing Cabinet and that sarcophagus Harry hid in during the second film which you never saw because the scene was deleted.
There's also going to be darker Diagon Alley with scary music and DEATH EATERS PATROLLING THE GODDAMN STREET.
The press release says: "The new permanent Dark Arts section will be launched with a two-week event highlighting the Dark Arts from Friday 17 October to Monday 3 November and all extra activities are included in the ticket price."