Unfortunately I don't have anymore information.

There were reports that they had issues at the Sebring test and that an engine replacement had taken place. Now Mike Fuller has posted this information on FB. Porsche also completed half as many laps as Audi during that test.

There was also a tweet from Andrew Frankel saying the following:  "How serious is Porsche about it's LM programme? Their 2015 car will be all new and they're working on it now, before the 2014 car has raced."