The new page is not only more modern, but also it is dramatically better at selling (but this is not what you are asking about).
Old one was good, but started to look as old fashioned sales page.
The new one looks like a modern landing page.
Great job in my opinion (not an expert though).
The image above... apologies, but no. It does not fit the new design at all, if that is what you are asking about.
For the new site, you need something between an architectural illustration, a modern magazine illustration and a beautifully simplified technical drawing, not something that is too playful for the subject and looks like children's-book illustration.
It is also not a professional advice, just my personal opinion based on being on the Internet almost since it exists.