Im surprised this doesnt have its own thread. We previously had a thread on the subject of what would be required to replace the concorde, which actually turned out to be somewhat accurate. The Aerion AS2 is a Boeing backed supersonic 20 seat business jet set to fly in 2023. It travels Mach 1.6 (Twice the Mach 0.8 of most airliners) and has a range of 4750nm or almost 5500 miles/8800km. This gives it the range requires to fly the entire Atlantic and much of the Pacific nonstop. Mach 1.6 also happens to be the exact number we had predicted for a Pacific capable supersonic airliner. The project has also previously worked with Airbus and Lockheed before Boeing picked up development. So its definitely a promising project.