https://wccftech.com/apple-is-working-on-new-powerbeats4-headphones-as-per-ios-13-3/

Apple is working on new Powerbeats4 wireless headphones with Hey Siri support, as per new strings found in iOS 13.3's public build.

Powerbeats4 will be direct successors to Powerbeats3, which shipped with a W1 chip. As per the strings found in iOS 13.3 by 9to5Mac, Powerbeats4 will support hands-free Hey Siri. This means that the new wireless headphones will also ship with the new H1 chip, which enables this feature. H1 chip was introduced in second-generation AirPods, and also included in AirPods Pro. Compared to the W1 chip, the H1 chip provides faster connectivity and improved battery life.