The FIA has revealed that eight of the ten Formula One teams will speak at the International Court of Appeal hearing into the sports diffuser row next week in Paris.
The governing body had already announced that the Court of Appeal would meet on Tuesday 14 April to discuss the issue after Red Bull, Renault and Ferrari appealed against the decision taken by stewards at the Australian Grand Prix to reject a protest over the diffusers fitted to the Brawn, Williams and Toyota cars.
BMW Sauber then lodged a similar protest, which was again rejected, during the Malaysian Grand Prix at Sepang, and those seven teams will now all appear before the Court of Appeal to further discuss the issue.
McLaren will also be heard at the Court of Appeal hearing, with Toro Rosso and Force India the two teams not expected to speak out.
An outcome from the hearing is expected to be revealed the following day on Wednesday 15 April.