In 2015, ATS started work on a completely open source OTA update system as part of their work in GENIVI. Since that time ATS has developed the software into a fully-functional, production-ready end-to-end system that is already being deployed and evaluated in multiple organisations. Today, ATS's OTA software is integrated as a platform component in both AGL and GENIVI, and in this talk we will highlight the progress made in the last six months to integrate OSTree support into the platform. We will also explain how the deep integration of OTA into developer workflows can increase the pace of development, and how OTA can be used to showcase innovations between AGL members.