An update pushed out today by Google includes 13 functional patches for the Pixel devices. These are patches designed to improve the performance of the 2016, 2017 or 2018 Pixel models. For example, one of the patches improve the memory performance of the Pixel 2, Pixel 2 XL, Pixel 3 and Pixel 3 XL. Some owners of these models have previously complained that they could not keep more than three apps open at one time. Some Pixel 3 and Pixel 3 XL devices have been known to redraw apps constantly.
Other functional patches include one that helps improve how the camera captures images, and another that makes the 2017 and 2018 Pixel models more compatible with Android Auto. All six Pixel models have had their volume behavior and unlocking performance improved while Bluetooth is being used.
Some of the fixes are aimed at the new Pixel 3 and Pixel 3 XL, such as the patch that improves the visibility of notifications when either phone is placed in the Pixel Stand. Speaking of the Stand, after the update, the latest Pixels should respond better to the "Hey Google" and "OK Google" hotwords that open Assistant, while docked to the Pixel Stand.
The Pixel 3 and Pixel 3 XL received a patch that improves the triggering of the Always On Display, another that improves the performance of the camera shutter and another that improves the contouring on HDR color with certain media apps. And both models should have improved audio on particular automobile models that have Android Auto installed. Lastly, the Pixel 3 XL will now be better able to detect when an audio accessory has been plugged into the USB-C port.
The update should be rolling out now to all Pixel models. To pull it out manually, go to Settings > System > Advanced > System update.