Framework laptops
Modular laptops, part of the effort by some non-mainstream companies to make laptops as good as the ones from 2010.
The company recently announced they'll be opensourcing their firmware, specifically the code for the embedded controller (power, fans, voltage).
It still doesn't have the ability to install your own BIOS. Many netizens are working on it.
Two other companies doing something like this: System76 and Purism.