It's nice, but it's basically Scaled Composites, Rutan's old company, building a supersonic fighter plane sized aircraft. That's what Scaled Composites does - build little airplanes as test vehicles. Not always little; they built Stratolaunch.

There have been many supersonic bizjet projects.[1] Spike [2] seems to be the only one other than Boom still alive.

[1] https://en.wikipedia.org/wiki/Supersonic_business_jet

[2] https://www.spikeaerospace.com/