Dueling Dragons is being rethemed to Dragons Challenge
Flight of the Unicorn is being rethemed to Flight of the Hippogriff
HP and the Forbidden Journey is a new dark ride using the Kuka robocoaster technology - height restriction is 48 inches. The queue is interactive and contains locations like the Great Hall, Room of Requirement and Dumbledore's Office.
The area also contains several shops from the HP books (Honeydukes, Zonkos, Ollivander's, Owl Post), including interactive elements like the wand choosing the wizard at Ollivander's and a howler at the Owl Post. Cards/letters can be sent with a Hogsmeade postmark.
Food and drink from HP will include butterbeer (can't wait!) and a counter service restaurant called Three Broomsticks.
The video from the Ellen show also shows performances from the Beauxbatons and Durmstrang students, and there is supposed to be a frog choir that performs several times a day.