Renault on Thursday is set to release more details about the loss of Nick Heidfeld's race seat.
In a brief statement on Wednesday, following intense speculation, the team announced that Bruno Senna will be driving alongside Vitaly Petrov this weekend at Spa-Francorchamps.
"A press release with further details on the matter will be issued tomorrow morning," it said.
Additionally, 27-year-old former reserve driver Senna will speak to reporters in the FIA press conference.
German Heidfeld's management has not been available to comment, but the Daily Telegraph said he desperately tried to retain the seat "before a judge on Wednesday".