[Qiasfah]

In Austin, no, the map follows closely to the city limits.

They provide maps of the rollout too: https://fiber.google.com/cities/austin/fiberhoods/

[carussell]

To be fair, the city limits in Austin are pretty huge, already encompassing lots of what would qualify as the suburbs. Take, for example, the West Gate/South Manchaca/Stassney/William Cannon area (marked as Emerald Forest above), where there's already heavy build out going on.