The T-Mobile G1 doesn't officially come out for another 10 days but if the preorders are any indication, and 1.5 million is a HUGE indication, than it looks like Google's Android OS and the G1 are going to make a big splash October 22nd.

That figure represents actual customer orders, not units shipping to retail. 

While not guaranteeing Android will become the much sought after "iPhone killer", it does prove that consumer awareness is high enough on the Android platform that if Android and the Android Market do deliver, it could pose serious competition to the iPhone's current place in the mobile landscape.

Via