I would have said that 2017 was nothing like 2013 a month ago before btc went up to a crazy $4.5k, but now it indeed is resembling 2013 conditions. People are over optimistic and buying blindly, and i see ads everywhere about making money in bitcoin.
I'd expect a new year to be a new chapter for bitcoin, once again. This pump is probably not going to last into much of next year. potentially, it could go to the end of this year but if it continues any longer it'll be bursting at any time.
The reason why it's not correcting yet is because of the fact that more and more people are still buying in, for some reason. This can't last forever, 10x returns in a year is crazy enough. I just can't see it go to 15x or 20x, even though it is technically possible.