Not sure if this has been posted yet but could the supposed Vekoma be a tilt coaster? They have a placeholder layout, but notice how it has a random thick tube under the top of the lift hill. A regular coaster wouldn't need this, so maybe its trying to indicate a sort of substantial structure at that point (plus the track goes through it lol, so clearly the 3D modeller added the tube later)
The vertical first drop and twist would of course work with the tilt mechanism too, similar to what the Saudi SF one was going to have.