A technical overview of all features and enhancements provided in the new Sitecore 9.1 release. Contains both the Experience Management as the Experience Platform features. Find the explanatory blog posts here: http://www.pieterbrinkman.com/2018/10/18/whats-new-in-sitecore-9-1-a-technical-overview/
Also more information on how Sitecore is building towards the future.
Presented by Mark Groves, Senior Director Product Management, and Pieter Brinkman, Senior Director Technical Marketing, during Sitecore Symposium 2018