When browsing for upgrading a product, it's nice to see the site you're buying from running the product themselves as a view of the latest environment and functionality.

When will ViArt be using and/or at least having the demo setup on the latest version. I think the demo is from like 3 years ago.

Actually ViArt Shop Demo is on version 4.0.5 since its release, this is a direct link to it:
http://demo-shop.viart.com/demo.html
 
And yes www.viart.com is based on ViArt Shop too
 
Regards,
ViArt Team