Hello Alix,
I'm glad to hear that you're planning on using GeoPlanner with your organization. Unfortunately, Rob is no longer with Esri, I work with the GeoPlanner team and I'll be happy to help you!
As of right now, there is no latest video showing the latest capabilities with GeoPlanner. There is a lesson (Get Started with GeoPlanner for ArcGIS) that teaches new users how to use GeoPlanner. This would be a good case example, as the scenario is based on a problem that our customers have ran into. There is a release coming in December with some updates and bug fixes, check out our What's New to see specific details on these updates.