The FIA, ACO and IMSA today confirmed the consultation process for the proposed 2017 LMP2 regulations has begun, but no final decision has been made yet.

An announcement was due at Silverstone this morning, but the planned press conference has been canceled and a press release with an update was sent out instead.

READ: IMSA Confirms Multiple Engine Manufacturers, Bodywork for 2017

The statement did however confirm that the sanctioning bodies are actively looking to limit the number of manufacturers, in order to reduce the cost per car and make the class more sustainable.

Based on previous discussions, including the most recent meeting at Paul Ricard last month, indications are that the proposed four-manufacturer limit is still on the table, as well as the previously announced spec engine for the FIA WEC, ELMS and Asian Le Mans Series.

“The LMP2 category has been one of the great motorsport success stories, and the ACO is very proud of what has been achieved. We are in consultation with the manufacturers and the teams to find the best solution for the new 2017 regulations,” said ACO President Pierre Fillon.

“We must remember that LMP2 is for teams and drivers, it is not a manufacturer category outside of North America, and we must build a sustainable business model for teams, cars and engine manufacturers.”

Fillon said 21 engine manufacturers have been consulted about the best way do reduce costs, with the decision having been made to utilize a single supplier. The tender process to begin in the summer.

It’s understood an effort is underway for a spec electronics supplier as well, with the goal of reducing the overall technical costs of the class by 20 percent, subject to the finalization of the regulations.

“We are going to make sure the LMP2 category provides the best solution for teams and drivers wishing to compete in a Le Mans Prototype in endurance racing for many more years to come,” Fillon added.

With ongoing discussions with manufacturers, it is now expected that proposal will be revealed at the ACO Press Conference at Le Mans.