NASA's X-59 research jet is designed to travel faster than sound while muffling the resulting sonic boom. The space agency is exploring whether the plane's tech could also apply to future commercial airliners - allowing travellers to cross the Atlantic at speeds greater than 1,500mph.
It seems to be an attempt to solve one of the two problems with the Concorde - reduce the sound of the sonic boom so that it can fly at supersonic speeds over land and not just water. This would make the planes more economically viable as they can fly more routes. The other problem, though, which is not mentioned in the article, is the absurd amount of fuel the Concorde needed. Still going to be a major issue if they haven’t made these more efficient.
There exists a research paper claiming that a much more fuel efficient plane is possible: https://arc.aiaa.org/doi/10.2514/6.2022-3314
Problem is, it is locked behind a paywall that I cannot circumvent. But even if the paper is only half-true, it still implies a large efficiency gain is possible.