I had my UNC interview Monday, January 7th. I went early because I could not make it on Saturday, the 12th.
They invited 60 students for interviews. 30 will achieve enrollment. I asked how many applicants usually accept UNC when offered admission. I was told that the last couple years, they had all but 1 or 2 accept their spot when offered admission. However, in the past, they have gone about 15 into their alternate list.
That tells me that almost everyone who gets into UNC is accepting them. If the trend continues, I think a wait-list is as good as a rejection for this year.