The wonderful folks over at Hoth Bricks have released a couple of images of the new Scooby-Doo sets. We can assume the above, Mystery Plane Adventures (75901) and Haunted Lighthouse (75903) below were taken at the recent German toy fair. With the Mystery Machine (75902) and Mystery Mansion (75904) provided as launch images of the theme, we now know what every set looks like with the exception of Mummy Museum Mystery (75900).
Mystery Plane Adventures (75901) has a Headless Horseman and Shaggy minifigure. It also appears that Scooby is flying the plane and I'm guessing that this is actually a posable minifigure this time and not the single mold figure that we've seen in the other sets.
The Haunted Lighthouse (75903) also has Scoob and Shaggy along with a Daphne, a swamp creature and some sort of bearded ghost minifigure. There is a better look at the posable Scooby-Doo figure here, we can assume similar to the plane fig, piloting the boat.