Finals are ruling my life, so dont expect much from me for another 24 hours. Last year the status change to unknown typically meant a ding. However, there is always hope...occassionally it actually went to admit but at a much lower rate.
Chances are today was a big day for decision so they probably did a system wide update which is why you all had status changes to something new. They may have decided the previous Tues/Friday wasnt going to work well so got rid of that, not surprising considering people heard on all sorts of days last year.
I would expect the next two weeks to be really busy though guys. They like getting a lot of decisions out before the holidays, they then take a break over christmas, they dont want to ruin peoples holiday with bad news on the 24th.