They aren't showcasing grass at the moment if it exists. Seems like they would surely do it. I'm guessing all their base hardware installs can handle it.
They've heavily planted the grass billboards... meh, but that's Unity. I'd love to know if the newer Unity has any soft shader options for the billboards.
The bunker does seems to be improved. Also, seems to have a few more tris around it, lending to softer slopes. But, this can be done in our current CF as well.
For what they're showing, it's better than what they were doing in PG1. But, they've always stuck with stock stuff anyway. Even in VG1. My favorite TM course that I've seen is Shelter Harbor. The textures seem right and the course is well planted but it's not much different than these images.
So, in summary, improved, yes. Something worth teasing, probably not unless they show a little more.
At this point, half the PC user base may be on a blue pill so they would have to know they need to show off more than a little leg. Maybe they're targeting the millennials but I'm certain they can't afford it.
All this makes me wonder just how imminent it's release truly is, although Trackman may not realize how many in their user base are really tuned in for 3D rough grass.