Snow on roofs are simply winter versions of roofs textures. MS did not add this asset/condition in the textures database... It is an extra set of textures with a code to handle their season condition... not a ground breaking technology
As for the soft dynamic shade, again nothing radicaly impressive, yes it is more advanced than FSX, and it is more like XP10 dynamic shades I'd say... And now btw P3D V2 is getting this new shading effect...
My point was for the overall realism effect of the whole world, it is not better than the 2006 FSX IMHO and CYUL that is modeled in the similar ways FSX scenery are 3D modeled, it is not better than FlyTampa CYUL
All in all, one would expect radically more realistic worlds with those multi million motion simulators using huge expensive non commercial computers... Not mentioning that the dull application/usage of the satellite imagery is nothing special neither...
I would expect a 2013 real motion simulator visual engine to look more like this one...:
http://unigine.com/press-releases/13061 ... o-preview/
Cheers