Mercedes has confirmed it will not reveal the identity of its replacement for Nico Rosberg this year.
The championship-winning outfit has been left without a team-mate for Lewis Hamilton after Rosberg surprisingly quit the sport five days after winning the championship.
That Anglo-German team have therefore frantically been searching for a replacement and have a shortlist of drivers to work from, but it's believed they've yet to agree terms with anyone.
Mercedes won't therefore be announcing who will partner Hamilton until next year, a team spokesperson confirmed.
"Nothing is planned for the period between now and our return to work on January 3," they said, suggesting an announcement may take some time.