Many changes over the past year.
The MQTT protocol has been updated to t:patriot/ m:.
Several new plugins to support Curtain and additional ControlEverything (ncd.io) 12v Photon boards.
Greater flexibility by moving automation logic out of IoT and into the sketches.
Updated Alexa Smarthome controller. This isn't published yet, so will need to install it on your own Alexa developer account.