Rumors about the Sony WF-1000XM4 suggest better battery life and increased HD sound

Watch out for AirPods, the Sony WF-1000XM4 is the long-awaited successor to one of the best wireless headphones ever – and could come with two major upgrades.

A prototype of a future pair of wireless noise canceling headphones from Sony with model number YY2948 has been certified by the FCC and Bluetooth SIG and if the code name really matches the Sony WF-1000XM4, we could prepare a number of major upgrades.

Source