You can also test your apps using the included iOS Simulator, which supports iOS 6. iOSSDK 6.0 requires a Mac computer running OS X 10.7.4 or higher (Lion).
According to the Google Geo Developers Blog, Google is also rolling out a Software Developers Kit (SDK) for iOS maps that will allow developers to link directly to full Google maps functionality within their apps and also to use a simplified URL scheme to link to specific map locations.