A new leak has spilled the beans on an interesting move from Sony, as the company is preparing to re-launch its 2020 over-ear headphones, the WH-1000XM4. Dealabs obtained details on the Sony WH-1000XM4C, a new variant of the headphones Sony first released back in 2020. The refresh was first leaked by Roland Quandt of WinFuture earlier this week, but this new report reveals more details. The updated headphones would apparently feature largely unchanged hardware, though slightly shorter battery life at 34 hours compared to the 38 hours the original pair were rated for. The report goes on to mention that Sony will release the refreshed headphones on September 7, just a few weeks from now.