Those winter screenshots look beautiful, I just watched a couple of videos as well, I so hope teens get to do slow dancing I was disappointed they couldn't do club dancing as I saw no reason why not, the animations would have worked the same for them.
The igloo looks interesting for homeless sims and dynasty starters, that is going to be a real challenge with snow. Can't wait to see how well you can survive in winter with no house and plants will be dormant so no free food. I know you can just make it another season but I like the idea of a really tough start, challenges make this game more fun.
I finally bit the bullet and pre-ordered, first time for an expansion but this is the first one that I have really wanted badly.