Assuming you are referring to the upcoming Pixel 4 phone:
Some general expectations would be improvements to the camera (as Google has typically done with each successive Pixel release), a more powerful processor, and perhaps a larger battery.
One specific, and somewhat unusual, expectation is that the phone may have Soli radar technology, which would allow users to interact with their phone in new ways, such as gesture controls.
Of course, until the phone is actually released, it is impossible to know for sure what features it will have. However, these are some of the things that people are hoping for.
