I have been searching, but given that it's April 2016 still, I didn't have high expectations about finding anything.
I have found a few pictures of a certain 'Holiday' Barbie, one in Silver and Purple, but even though I can find no mention of her from Matell themselves, and it seems very plausible that she is the Holiday Barbie 2016, I'm not entirely sure. For this reason I won't share the pictures I've discovered, but if I do, in fact, learn that she IS the 2016 Holiday Barbie, I will be sure to make the post here.
The one thing that makes me weary is a little ornament she carries that says 25... although the series has been around for at least 25 years, that would not be this year, it would have been 2013's release.
So again, just updating I'm still here, I promise and I'm still searching, but for now there is no change.
I have been watching the sales even for the 2015 Holiday Barbie and they still stand pretty high as the day they were sold off the shelves. I'm surprised to be honest to see it has not fallen into the $10 range, but in fact, she is still a popular year, but again that may change as time goes on this year and after this coming Christmas her numbers should stay about the same and then we'll know for sure where her value stands!