Cool. Looking forward to it then. May have to wait for my GTX 1080 to really dig into it since it looks so good at higher resolutions.
Technolust is the game that introduced me to the method and it works great. That game does 45 degrees and it works fine since you can see everything in between by turning your neck. But maybe that only works because a city is all 90 degree angles anyway and the environments are smaller. The larger environments set in nature might require something a little smaller. Would have to test it.
Apparently The Solus Project's director and programmers managed to optimise the heck out of it, so it should look good with a 980 or above.
I was wondering about snap-turning in terms of the level design, yeah. TSP has a lot of natural formations - caves, irregular bends, lava hexes. I guess if your head turns the body it's OK. Could be weird, though!