There is a rumor that a source at BGR heard suggesting that Google may actually release their first Ice Cream Sandwich devices in October. The move is designed to coincide with the launch of the Apple iPhone 5 in September or October, so as to entice folks away from considering the Apple product. Basically, Google doesn't want to risk losing customers, that might be coming out of contracts around that time, to the new iPhone. Clever ploy.
Source: Android.net via BGR