Noted leaker Evan Blass posted possible billboard ads for the Google Pixel 4a, which is expected to launch later this year. The ads, if true, confirm many of the rumors surrounding the phone's design, including its hole-punch selfie camera and square housing for the rear-facing cameras. Perhaps most importantly, the ads also confirm a killer price tag; the Pixel 4a will launch at $399.
https://www.notebookcheck.net/Leaked-Google-Pixel-4a-billboard-ads-confirm-design-price.457343.0.html
These are fake.
He has put these images to show that they are fake.