Sony has started teasing a new product, dubbed #YourWorldStartsHere. To be revealed on May 12, the products appears to be the WH-1000XM5, Sony's next premium pair of over-ear headphones. In the meantime, pricing has been revealed for the WH-1000XM5, as has availability going forwards for the WH-1000XM4. Purportedly, the WH-1000XM5 will be more expensive than the WH-1000XM4 too.
https://www.notebookcheck.net/Sony-WH-1000XM5-Launch-date-confirmed-as-US-pricing-leaks-with-WH-1000XM4-set-to-remain-at-349-99.617692.0.html