Replaced with https://github.com/silverstripe/silverstripe-ux
This repository was used to track the development of SilverStripe 3 design work that won't actually become part of the final product. Mainly, this repository will contain HTML/CSS/JS mock-ups, but PNGs or PSDs could go here too.
SilverStripe 4 designs are mocked up in Invision