First of all you have bing-maps preinstalled, which is not the worst substitute. Also there is an app called "gmaps pro" - it's not from google but delivers what you want. Since there was no official maps-app on WP 7.5, i doubt that google app is arriving soon on Win RT.
I thank everyone for the suggestions but I own an Ipad with that junk they call Apple Maps.
I love the new Surface RT but would wait for the Pro BUT if Google Maps is not present I'm not sure what I will do.
I need Google Maps with Street View. I might have no choice but to purchase Nexus 10 with Google Maps but inferior to the Surface.
Microsoft should liscence Google Maps. Bing is only marginally superior to Apple Maps.
Any suggestion is appreciated.