Preliminary list of teams just got released:
some highlights:
Deltawing is back
ESM is running the HPD Ligier for this race, looks like they will be still be full time WEC again this year.
BMW-Riley will be back for this race
Mazda will be running petro cars
Ford will have a Ecoboost DP and a GT car
Risi and Scuderia Corsa will be running the new 488 GTE
M6 will run in GTLM and GTD
The overall GTD field is huge with the influx of GT3 cars including the Huracan GT3, M6 GT3, 488, 458, R8, Vantage GT3 and 911 GT3