Recent insights from the Wear OS 6 developer preview and an APK teardown have revealed new features for the upcoming Pixel Watch 4, including an Adaptive Charging tool that stops charging at a predetermined percentage (likely around 80%) and a rebranded Water Lock mode. The Pixel Watch 4 may also automatically lock your phone if it is left behind. The official rollout of Wear OS 6 is expected to begin in late summer. Additionally, the update will introduce a new Material 3 Expressive UI, dynamic color theming, and a third-party watch face storefront. The Pixel Watch 4 may be thicker than its predecessor to accommodate a larger battery, enhancing the battery life with the new adaptive charging feature.