No it wasn't. The in-game W900L is crap and not even close to size, dimensions and proportions of the real truck. Look at any part on the SCS W900 and you can be 100% sure it's not correct.
And the fact the W900 on the photos didn't have tags for 3D scanning just means that the truck will not be rebuilt from scratch. It just means that it MAY get slight model tweaks and nothing more. I only hope that they will at least fix interior mirror positions to actually show how far from the narrow cab they are in real life, so that if we won't see new models, we at least get a bit more immersive driving experience.