We know that Google likes to add auxiliary processors to its devices, such as an additional image processor called Visual Core from Pixel 2 and 2 XL. It is no different for Pixel 4 and 4 XL that have got an extra neuro core. Google says they use it to drive the phone's face lock and to speed up device processing, always listening and machine learning.
This description makes us believe that it can be used for the next genes local assistant, live transcription and the new recording app. This may mean that some of these exclusive Pixel 4 features will not find the way to older devices for the lack of appropriate hardware.
Neural Core also processes the face data it receives through various sensors and sends it to the extra Titan M chip for authentication, so it would make sense that Core is used for image processing. We talked to the camera team, and it said that while it uses the chip for some small things, it's nothing to note. All the usual image processing power still stems from Visual Core and Snapdragon 855.
With Visual Core in Pixel 2 and 2 XL in mind, which wasn't even turned on when the company released the phones, Google may be planning to develop even more features that use Neural Core heavier or open it to other developers. We look forward to all the new things it will enable in the future.