While we are waiting for the new level 90 Heroic version of Scholomance, we went back and took a look at the revamped lower level version. There are small new mechanics, changes, and new art that make the dungeon a much nicer experience than before, so watch the video for the full experience.
The entire dungeon has new art, increased texture resolutions, and the new lighting system, making for a very nice environment.
Janice Barov makes many copies of herself now, requiring you to find the correct one and kill it before she will reappear.
After killing Professor Slate, you can drink a potion that will give you increased damage and his model. The potion works as a shapeshift and currently persists outside of the instance. You cannot mount with it however.