ExtJs 6 includes features such as MVVM, routing, responsive design capabilities, data package improvements, breadcrumb bars, dashboards, layout improvements, accessibility support, and component improvements. It also merges ExtJs and Sencha Touch for a unified development experience across desktop and mobile. Other features include promises support, pivot grids, export plugins, microloading, and expanded browser support. Fashion was introduced, which is a compiler for building themes based on SCSS. Sencha Cmd 6 provides capabilities like workspaces, packages, and native packaging.