PAG_J1 (works for Porsche?) said that they are more understated than the Concept, so sadly, they likely aren't hiding more than they are exactly what the mules show.
EDIT: He also confirmed no suicide doors
Yes, the curves aren't as aggressive as we saw it on the Mission E...but still the test mules can't really give you the right expression (and the angle of this photo above is really bad) of the curves. Wait for the finished production car