Wait to Go Hands On
Another major reason to wait is to go hands-on to see how the Pixel 4 feels and looks in person.
There's no more notch, and there is a new color that you might want to see in person. The overall size is similar to the Pixel 3 and Pixel 3 XL that you can check out in stores, but it's not the same.
If you are on the fence, hold off and wait until you can check out the Pixel 4 in person at a carrier or at store like Best Buy.