Sony’s WH-1000XM3 headphones are due for an upgrade, and there are hints it might be worth waiting. Walmart has prematurely listed the WH-1000XM4 (via Laptop Mag) with multiple major feature additions. To start, it would finally support multiple devices with easy switching — you’d only have two devices, but that might be fine if you just want to jump between your phone and PC. Bluetooth makes the leap from 4.2 to 5.0 as well. Precise Voice Pickup, meanwhile, would address the XM3’s lackluster voice quality using five microphones and “advanced audio signal processing” improve sound for your call recipients.

It’s not certain how much audio quality would improve (if at all) over the XM3. You’d still have 40mm drivers and a frequency response range up to 40kHz. The listing does refer to “Edge-AI” that aims to restore sound details lost in compression, however. You could expect the same 30 hours of claimed battery life, including fast USB-C charging that provides five hours of playback after 10 minutes of plugging in.