https://wccftech.com/latest-ios-13-3-1-update-includes-images-of-upcoming-powerbeats-4-earphones/

Apple had seen fit to release iOS 13.3.1 to the general public yesterday. While there were signs of new Powerbeats 4 hinted in iOS 13.3 beta back in December, the latest release showcases a few icons that indicate how the earphones will look like. The new images discovered in the latest iOS 13 update shows Apple's upcoming semi-wireless earbuds.

The two earbuds are connected to each other via a single cable but connect to your phone wirelessly. The last version of the series - the Powerbeats 3 was released back in 2016 which shows that the update is due for a long time.