Hi all, add me to the interview invitee list of the 17th Jan!

I just realized that I too had got the invite on 17th Jan, 1:44 EST. (There was some real bad confusion. There still is actually, but never mind).
But, as of now I am perplexed about which category I fall in. PLZ give me your
assessment on this one. I had
applied R1. Didn't hear from Ross until 14th Jan, when the decision notification on wolverine access said that I have been
wait-listed. And, 3 days later I get an IV invite - on the 17th Jan along with the R2 applicants.
Can somebody help me read into this? Could this mean that I am off the wait-list for now, or does it mean that I am still on the wait-list, but they are only interviewing me to further evaluate me?
Is there any other R1 applicant who got an IV call on the 17th Jan ? I am obviously really excited about the invite and really looking forward to Interview Saturday, but am just trying to evaluate my real possibilities here. Because the WL conversion ratio at Ross is lower. (huhhh.. long post, sorry abt that)