Maybe it is like an adv, means "very". Because I know another similar phrases"pretty new", "pretty" here means "very"😅

They are two separate adjectives. Here's an example with seven separate adjectives: They should come up with a clever shiny expensive new workable colorful paper product for their large dirty hot new clever factories to make.

In the Electronics and Electronics Industry and also for the computer software programming of Electronic devices. The makers and computer programmers try to make the devices sound smart and clever. It is a human condition we have called. "Personification" . Also the programmers of such devices like to make the computer code seem like natural language. So they refer to a machine as thinking when it is just a relay acting in on or several possible ways. The programmers say it as made a choice. This means the product is more than just a plain boring old product it's a clever product. When in reality it's just a product. A clever product sells a product stays on the shelf unsold.

Yep, it just means 'clever + new' with clever being a product that is smart or innovative in some way.