For those of you who never got to take a ride on Concorde, there is a start-up out of Colorado called
Boom Technology that is working on
a 40 passenger commercial supersonic aircraft. The company is still quite small, but it seems legit. Their technical staff has significant industry experience, and they are supported by Richard Branson and Virgin Galactic who will provide manufacturing/test capabilities.
Boom Technology says they will fly a demonstration aircraft by end of 2017.