I dont think so. In the end game Gold is still a precious metal and a beautiful thing in the eyes of a person. Bitcoin is a different story as it is a very good way to make transactions so as for the better currency the bitcoin would be best of two as for my opinion.
I think for now bitcoin can't replace gold. But the value of the gold its possible to bitcoin can replace it. In coming year price of bitcoin is getting higher but the price of gold is still steady. So if I choosed, I'd rather choosed bitcoin. For the better future.