You get rooming assignments much later in the summer, but you still have plenty of time to contact your roommates.
Freshman living depends on the dorm you're in. There are 16 (I think maybe now 17) dorms, in or around the yard. Most people have at least one roommate, and most also live in suites, but that varies depending on the building. Most suites are double and single bedrooms situated around a common room. Here are some good sites that outline all of the freshman dorms if you have a lot of time on your hands to explore haha:
Frosh Dorms Project: Graphical Map (the burgundy buildings are freshman dorms). And also:
Freshman dorms - Prefrosh