CW Network's president Mark Pedowitz has announced that they have struck a deal with Apple to bring a CW App to the Apple TV. CW confirmed to MacRumors that it will be a dedicated Ap on the home screen:
"It's a dedicated CW app that will work like our Xbox and mobile and tablet apps - no cable authentication required, full episodes of our shows available next day after air, ad-supported."
At this stage as with Netflix and Hulu Plus it will US Only.