Obviously, this does not mean we have repaid our mortgage. Things will go back to the red side once we pay our credit card bills etc, but hey - it does mean we're doing well on the repayment side of things.
Does this mean we will not have a mortgage soon? Not at all; as we are still planning on extending our house we will be withdrawing money back in large quantities that will leave us slaves to the banks for a few decades more.
Still, encouraging news.