A new leak has given us a better idea of what the Google Pixel 5 may look like. The square camera module from the Pixel 4 makes a re-appearance, as well as the rear capacitive fingerprint reader from the Pixel 3. There also appears to be only two rear cameras.
https://www.notebookcheck.net/Pixel-5-New-renders-show-rear-fingerprint-reader-and-possible-lack-of-an-ultra-wide-angle-camera.481145.0.html