I just feel like some of the content could have been included with Late Night in some way or another. I think some of the new features are pretty neat but I'm still hesitant about the social media aspect as well. Also, I hope the venues don't end up like the empty club problem in Late Night.
There is a trailer for it: http://www.amazon.com/Sims-3-Showtime-Limited-Linux/dp/B006D3JT0U/ref=sr_tr_1?ie=UTF8&qid=1323161493&sr=8-1 If you scroll through the pictures, the video will be at the end.