In his presentation Daniel shares some powerful features of the language service and shows off some new features coming in TypeScript 1.7.
WebStorm 10 offers support for TypeScript 1.4 and 1.5. This support is basically enabled out of the box. The minute that you launch WebStorm you will see TypeScript features available. This is the version that was included in the shootout for discussion on the panel at the TypeScript Editor Shootout.