I was digging around the web for some more info on this expansion to post here. Fortunately I found some better information than I can do over at the Sims VIP blog. Here’s a fact sheet for anyone interested in this sort of thing.
The blog also has a bunch of spoilers on this page, not sure what it all means.
I highly recommend pre-ordering this on Amazon so you can have it the day it comes out.
I do agree with some of the comments on the VIP blog, why wasn’t this released during the summer? I am not in school any more but this would have been a great thing for school kids over the hot 2012 summer.