I landed in sofia on the 19th dec and left on the 30th dec,both in and out of the old terminal.didn't look like the new one was being used.You'll have to wait and see which one you use.
actually new year was wicked thanks. sorry don't want to sound such a rant but it wasn't as we expected and wanted others to be made aware and it isn't just me lots of people we spoke to whilst we were there said the same thing. so to all who wish to hate me now fine!!!