Dwave Systems has fixed the dates for the demo of their Orion quantum computing system. They are going to hold two events, one at the Computer History Museum in Mountain View, California on February 13th, and the second at the Telus World of Science in Vancouver, Canada on February 15th.
This 16 qubit system is the beginning of commercially usable and useful quantum computers.
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More advanced quantum computers that will follow on the heels of this will have their biggest impact in enabling the rapid advancement of our control and understanding of the quantum world and the ability to solve new problems that we were not able to before. Large scale quantum simulations could rapidly drive advancement towards molecular nanotechnology.
The new age of large scale commercial quantum computers will be a high impact enabling thing.