DS recently found out that 4th years aren't routinely offered accommodation in college; the college has rented some flats elsewhere in Cambridge but he hasn't been able to find a group to share with, so he was waiting and hoping the college would be able to allocate him a room in an unfilled flat.
Today he has found out that his 3rd year results qualify him for some perks including a room upgrade; there's a good chance he may be offered a room in college after all, which would be much better for him.
I suspect that some / most of his peers may have already been aware of both of the points above, but he is in his own world and doesn't really access the grapevine.