If you like playing around with Google's augmented reality animals in Search, these virtual creatures might look more realistic on Pixel 4 and 4 XL devices soon. The Google Play Services for AR app has been updated with "Dual camera stereo depth on supported devices." This app is instrumental for unlocking the AR experiences built with Google's ARCore SDK. The two Pixel devices are listed to get the dual camera support upgrade coming out in the next few weeks.
This update means that ARCore will get better depth perception with two cameras, meaning more realistic placements for the AR objects. Google hasn't mentioned when it will be coming to other devices.
Source: Engadget