To me the big news here is not the gateway, it is the "Web Thing API" that you can read at https://iot.mozilla.org/wot/
This is a W3C draft about something that is badly missing currently: a common language that devices can speak.
"This document describes a common data model and API for the Web of Things. The Web Thing Description provides a vocabulary for describing physical devices connected to the World Wide Web in a machine readable format with a default JSON encoding. The Web Thing REST API and Web Thing WebSocket API allow a web client to access the properties of devices, request the execution of actions and subscribe to events representing a change in state. "
This is meaningful work that can impact you in a big way. Don't dismiss it too quickly.