It has been rumored for several weeks that Apple will implement the personal assistant Siri in iOS 6 for the iPad tablet and here's how everything came true last nightt. Apple has officially announced that Siri will be available in the iPad tablet, and in the images in this article you have the presentation assistant interface. Basically, Apple does not display Siri on the entire screen of the tablet, as is the case with the iPhone, but prefers to display it in a small border whose position can be changed on the screen.
Siri for iPad works in the same way as Siri for iPhone, but only iPad 3 will be able to run Apple's assistant.
