It's been awefully quiet around Perrin in the last weeks/Months. Perrin was at LM, but didn't want to give any comments or news about next season. Ginetta could have up to six cars in LMP1, together with the 2 Dallara's of SMP Racing.
BMW is entering the WEC & IMSA next year so LM will be included. M8 looks like a big beast though compared to the other cars in GTE.
My guess: if Porsche calls off their WEC program, Toyota might follow (or do another year just to finally win LM). DPi might be on the cards then for a LM entry from 2019 on.