Nine out of ten teams will round up their preseason today at Circuit de Catalunya. Not Red Bull Racing: the Austrians will stay at Barcelona for a filming day, sources within the paddock revealed to F1Today.net.
It was publicly known that there would be a filming day on Saturday, because it was one of the reasons that testing could not be extended this week. However, the circuit would not comment on which team would use the track, because that information was confidential.
A lot of teams have already done a filming day at the Circuit de Catalunya in the previous two weeks, so the only serious options that remained were Mercedes and Red Bull Racing.