I noted in another comment that we partnered with Compal as our main manufacturer, as they are one of the strongest notebook manufacturers currently and they believe in our mission.

For many of the other modules, we've partnered with other manufacturers specialized in different areas. We have a series of technical deep dive blog posts where we go into each: https://frame.work/blog/framework-laptop-deep-divethe-touchp...

How do you connect the keyboard?

I see the cable from the keyboard in the upper lid not going directly to the main PCB, but first to the same board as the touchpad. Is there some IC scanning the keyboard right in the keyboard module, and turning it to something like usb or i2c?

The touchpad PCB acts as a passive signal passthrough for both the keyboard and the fingerprint reader, so that we can have a single cable going from the Input Cover to the mainboard.