Though it seems doubtful, there are signs that
Google already experiments with a Pixel 3 succesor.
Images leaked show a quadratic camera buckle like the
iPhone XI is supposed to have. But so soon?

Rumors spread that Google might release the Pixel 4 in October and also Verizon as a provider is expecting the release to that date.

TheVerge has released a good comprehensive Teaser video here:

A hidden dig at Apple for releasing their iPhone XI at roughly the same time? Maybe…