Sony is finally getting around to releasing the WH-1000XM4, some eight months after the headphones leaked. Reportedly, the WH-1000XM4 will retail for €379.90 in the Eurozone and US$349.00 in the US. It could be upwards of a month before the up-market headphones start shipping, though.
https://www.notebookcheck.net/Sony-WH-1000XM4-Sony-announces-that-something-exciting-is-coming-your-way-on-August-6.483632.0.html