Vic Gundotra, Google’s vice president of engineering stated that:

When Apple ships its iPhone 2.0 update–and the accompanying App Store for distributing third-party software for the phone–you won’t have to wait too long for native iPhone apps built by Google programmers. “We expect to have applications at Day One.”

When we think of the app’s currently included on the iPhone and iPod touch, there’s no doubt that most of them are already Google powered.
» Google Apps ready for launch of the AppStore