Sony is yet to launch the WF-1000XM4, but a launch commercial detailing the upcoming earbuds has already leaked. A potential launch date has been revealed too, which would put the WF-1000XM4 just over two weeks away from being announced.
https://www.notebookcheck.net/Possible-Sony-WF-1000XM4-release-date-revealed-as-launch-commercial-leaks.541577.0.html