Got some pics of the 2019 Ascent while the Baja was getting serviced.

So it's based on the Impreza frame but uses a lot of the styling from the current-gen Legacy, matter fact the headlights are exactly the same as the Legacy's.

Subaru wasn't lying when they said this is their biggest model yet- this thing is HUGE for a Subie.

Picture doesn't really do it service, but in the picture above on the left are the two Ascents they had (red and grey), and on the right side are 2019 Outbacks.
Another interesting thing to note is the engine is (as of now) proprietary to the Ascent. It's a 2.4L turbo that, according to the literature I read, runs on 87 octane and can put out 260hp. The Ascent also apparently has a 5,000lb towing capacity.