The iPad Pro comes with 12.9-inch display, "desktop-class" CPU performance and "console-class"graphics, 32/128GB internal storage, 4GB RAM, Up to 10 hours of battery life, four speakers, multi-touch and multi-tasking features, optional smart keyboard and Apple pencil, Wi-Fi only or Wi-Fi + Cellular options, Touch ID, and iOS 9.
Although, Apple has previously announced that the iPad Pro will be coming sometime in November. According to 9to5mac, the large iPad will be available to purchase starting November 11 through the company's online as well as retail stores.
9to5mac