Thats what it appears to be. Pi-Top (the brand) has always been geared towards maker-centric use cases. The previous Pi-Top models allowed you to incorporate plug-n-play modules into the laptop itself. Perhaps they thought the built-in peripherals limiting for those who want to use the Pi-Top for a headless project. They showcase drones, bots and similar use cases on the announcement page.

However, it seems you can connect it to a laptop-like device based on one of the product images. I wonder if they're building a laptop accessory that's driven by the main unit?

Hopefully if you want the laptop form factor you can just buy the Pi-Top 3 and stick a 4 in there.