On Google Maps, as announced, come the super detailed maps currently available in four cities: San Francisco, Tokyo, New York and London.
They accurately show some details such as the rounded corners of the road, the vegetation and even pedestrian crossings and islands.
Details that can help both pedestrians, tourists and people with disabilities to study the route. This detailed view is currently being rolled out on the server side and should arrive on most users' devices in the next few days. Google, of course, should also add other cities in the coming months but at the moment no official information has been released.