So, the novelty will become a little more compact and will receive a more rounded design. The renders show that the device will still have rubber ear pads. In addition, the headphones will be equipped with a microphone and proximity sensors. By the way, the leak says that Sony WF-1000XM4 can support Hi-Res Audio technology.
As for the charging case, it will look similar to the current version. The case will boast a more power-hungry battery, support for wireless charging and increased power – 5V/140mA. For comparison, the case in the Sony WF-1000XM3 charges the headphones with 5V/120mA.
According to the leak, the Sony WF-1000XM4 will be announced on June 9th.