Red Bull will no longer announce their 2014 driver line-up at the Belgian Grand Prix, according to Helmut Marko.
Team advisor Marko initially said that the Milton Keynes squad would confirm Mark Webber's replacement at Spa-Francorchamps, and it was widely being reported that Daniel Ricciardo would be named as Sebastian Vettel's partner for next year.
However, the plans have now changed with Marko claiming there is unlikely to be an announcement this weekend.
"We will express ourselves when the time comes, and that will definitely not be at Spa," he is quoted as saying by Germany's SID news agency.
With Kimi Raikkonen's manager ruling him out of the running for the vacant seat on Monday, Toro Rosso driver Ricciardo is the clear favourite to take over from Webber.
Fernando Alonso, though, is still a dark horse, especially with Raikkonen rumoured to be interested in a return to Ferrari in 2014.