Google first revealed its plans to launch the new Googlebooks back in May, confirming they will run a new Android-based OS. We also got a sneak peek of some of the laptops earlier this month from the first vendor partners like Lenovo and Asus. And today, Google sent out invitations to media for an official launch event in New York on September 15.It shapes up to be a big announcement because it won't be just about the hardware. Google will announce what rumors called Aluminum OS, but we don't have an official name for it yet. We only know that it will bring the OS closer to Android,...