The slides from the May 9 ESRI Web App Builder Workshop have been uploaded and are available online!
Presentations focused on the enhancements with ArcGIS Online,WebApp Builder (WAB), and the Esri JS API. Tim Hensley with Esri presented on best practices for designing web maps and how you can easily develop robust, cross-platform applications for desktop and mobile devices using WebApp Builder. In addition, Tim demonstrated how to install WebApp Builder Developer Edition and consume widgets developed by the Esri user community. These presentations are attached.
Ken Carrier presented on an open source platform known as CMV (Customizable Map Viewer). This open source platform is available on GitHub and is built around the Esri JS API.