The HBO Go app will be available on PlayStation 4 later today. The PlayStation 4 app will function "just like" the PlayStation 3 version, according to Sony. Upon signing in, you'll be required to authenticate your console with your cable/satellite provider through HBO Go's website. Once your PlayStation 4 has been authenticated, you'll be able to watch any episode from any HBO series, including Game of Thrones, True Detective, and Girls. The HBO Go app came to Xbox One late last year.