https://techcrunch.com/2020/08/06/sonys-excellent-over-ear-headphones-get-smarter/

Sony knows how to make a great pair of headphones. The WH-1000XM3 are one of the best received pairs of over-ear models in recent years. Two years later, the company is ready to unveil their successors, which sport a number of smart connected features.

In fact, the WH-1000XM4 bring all sorts of nice upgrades to the line. Unsurprisingly, a number of them are smart features that more fall into the category of nice to have, rather than essential, but there are a few core updates, as well.