Im here in the US and if you go to google.com and view maps on the full site then there is a pop-up that asks if you would like to add the mobile app version to your home screen. This puts the google maps app on your phone. It is web based and at least on my phone is slow to load up but the resolution is what you were used to before the update.
I have downloaded the google maps app.
I am anoyed that i even bothered to update to ios 6. Tha apple maps app is useless. The other apps that use the links to it are now useless as well. Thanks apple.