The best possible score is 10.
No specific info about version 2.0. Please visit the main page of Lumion on Software Informer.
Why can't I register at lumion3d.com?
More than ten years I've been working with many apps about rendering and simulating 3ds Max Cinema
4D. Lumion 3d, actually, is the best and I'm enjoying it.
V-Ray for Sketchup helps develop Google Sketchup 3D architecture designs
It allows you to save your model in a format that Lumion can read.