Former grand prix boss Nick Wirth, sportscar team Epsilon Euskadi, leading race car engineering company Ray Mallock Limited and GP2 outfit Campos Racing have joined the list of outfits confirming plans to compete in Formula 1 next year, AUTOSPORT has learned.
Although only a handful of outfits have gone public with their intention to make the step into F1 in 2010, a more expanded list of candidates emerged from the French courts on Tuesday during the hearing to discuss Ferrari's bid to get an injunction on next year's rules.
As part of the defence from the FIA that such an injunction would wreck the plans of new teams to make the jump to F1, AUTOSPORT understands that a number of letters were presented from new teams saying that any delay to them getting the go-ahead for 2010 plans would force them to abandon their efforts.
According to sources, the list of teams that were looking at moving to F1 were Lola, USF1, Wirth Research, Epsilon Euskadi, RML, Formtech, Campos Racing and iSport.
Another two outfits have also expressed an interest in moving up to F1. British F3 team Litespeed issued a statement declaring its intention to apply for an entry, while Prodrive has also admitted to be considering the move.
However, in recent days Prodrive boss David Richards has suggested that uncertainty over the 2010 regulations was forcing him to consider a rethink about his plans.
"The new regulations announced by the FIA are very much in line with what we were expecting and, I believe, have the potential to allow a team to be commercially viable and competitive on a far more realistic budget," he told GPWeek.
"However, we are very concerned about the controversy these proposals have created with the existing teams and the uncertainty that this has created."
Bernie Ecclestone has also talked about a second team from the United States expressing an interest.
FIA president Max Mosley made it clear last week that the governing body was unwilling to compromise on its plans for a £40 million voluntary budget cap because it was vital that new teams came into F1.
"If we wait any longer, we won't have any new teams because it is too late for them to come," he said. "I think there was an element among the FOTA teams hoping to delay until the point where there could be no new teams.
"I think we now have 11 organisations that say they want to come in, of whom seven are serious. So it will be interesting to see what happens."
Should Ferrari's injunction application be successful, then it will mean that all the 2010 regulations introduced by the FIA last month will be on hold - including the fact that the entry list for the 2010 championship closes on May 29.
With the matter likely to go to appeal whichever side wins, the delay in the entry list closure will buy manufacturer teams more time to propose alternative regulations to the FIA - even though it could force new entrants to abandon efforts.
A decision from the French courts is expected at 2pm local time on Wednesday.
Ferrari has lost its legal bid to lodge an injunction against the FIA's plans for a voluntary budget cap in Formula 1.
The Maranello outfit was told by French legal authorities on Wednesday that it did not have a valid reason to block plans for a £40 million voluntary budget cap.
The move means that next week's entry deadline for the 2010 championship will go ahead, leaving current teams a few days to resolve their opposition to the regulations.
Ferrari had gone to the Tribunal de Grande Instance in Paris because it believed that the FIA's introduction of the regulations had been in breach of a technical veto that the team has over future technical rule changes.
The FIA argued, however, that the veto was no longer valid - and that Ferrari had also not used the available opportunities to impose its right.
It was also suggested to the court that imposing an entry deadline of next week was important to help secure the future of new teams in the sport - who need as much notice as possible so as to get their entries in place.
Ferrari has joined several other teams in saying that it will not lodge an entry to the 2010 world championship unless changes are made to the rules for next year.
well...this should get interesting