For ages the only turbine engine planes, that could go supersonic, had to have afterburners. Some newer jets, like the F-22 iirc, could do it without using the AB. How many other jet's are doing that these days , supercruising ?
There has been talk about making one for a few years now. Gulfstream cruises match .85-.9 now but no plans I've seen for going supersonic. Note that this is a Boeing/GE Company. Once built it will still take a year or more to get it's air certification.
At last, a jet that produces zero carbon that does not burn solid or liquid coal. It burns money instead. All the movie stars and ball players will get one.
What will its range at Mach 2 be?
Flights from NY to London at Mach 2, while not infrequent, are a very expensive perk. The Concord failed.
Will a Mach 2 flight from LA/SFO to Bejing save any working time?