It seems like 2017 will be when we see a lot of new interfaces come to market. Probably the next big wave will be in hearables — in ear devices that we can speak to.
Soon, Alexa-enabled earbuds will be on the market. Already, Apple has released the AirPods and Sony released the Xperia Assistant. The latest rumour is that Samsung will get in the game with a new wireless earbud.
For these new interfaces, it seems like the best application will be gentle push notifications that the user can hear. “John… nod gently if you want to hear your latest email.”