Here are a few more resources if you're interested:
Our roadmap:
https://getpolarized.io/2019/04/10/Roadmap-Q2-Q3-2019.html
Here's a discussion of using datastores to support a more distributed web:
https://getpolarized.io/2019/03/22/portable-datastores-and-p...
A high level mission statement which is still a work in progress:
https://getpolarized.io/2019/04/11/Polar-Mission-Statement.h...