Design Ops (the org that contains my team -
Design Tools) - http://airbnb.design/designops-airbnb/
The Way We Build (head of design @alexoid talking about our process) - http://airbnb.design/the-way-we-build/
Building a Visual Language (on our design system) http://airbnb.design/building-a-visual-language/
I think there is definitely a gap in the "literature" for this topic and will be eager to follow any other progress you can share.