The January date of the auction itself can only be brought forward by a couple of weeks, but much more has been done, says Ofcom, about the process of clearing the spectrum for use by its new owners.
The regulator said the 11 December date was "provisional" and said it would confirm the date by 26 November once the final regulations for the auction came into force.
And if a homeowner can't find the money to bring the mortgage up to date or find someone to buy the home, more than likely, the property will end up on an auction list.