I am not necessarily saying that your feet aren't that big, but I do think you should go to a good bootfitter and get sized up. I know people have big feet, but the only people I have seen with boots that big have been people who were wearing boots that were far too big for them.
I know that your old boots feel small, but I would not be surprised if they were big length wise and just needed to be worked on in other areas (ankle, forefoot, etc.).