I agree we're talking about a big game changer. It all started with mobile touch devices; that's a new paradigm.
But as you say future is heading to embrace the so-called "internet of things".
Interactions will not be longer HCI. Devices -conceived as a reality peripheral- will no longer be needed. We'll interact with products connected to the internet.
Those products will be now connected interfaces and should be shaped with that function in mind.
Connectivity will be a must feature to any new product design.