Kevin Hart is hosting but I think the musical guest will be what to watch - Sia just recently had a lot of drama over the controversy of her newest video, "Elastic Heart" (check out the video by clicking that link,) which features Maddie Ziegler (yes, the same girl from "Chandelier") and Shia LaBeouf fighting each other in a birdcage. The controversy arose due to their age differences and the "possible link to images that may induce triggers to victims of pedophilia." Sia apologized publicly on Twitter for the possibility of these images offending anyone.
Anyway, I'm sure they're going to do some kind of spoof, since they did one for "Chandelier." I'm guessing Taran Killam is playing Shia.