A new listing on a Brazilian site has revealed that Sony is hard at work on the next generation of phones, imaginatively named the WH-1000XM4.
The new M4s were first spied by Everton Favretto, who spotted the fresh pictures and details on Anatel – the website for Brazil’s National Telecommunications Agency. Given how similar these phones look to Sony’s previous headset, its clear that we’ve stumbled across a new member of the XM family here.
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