Apple News MS. Siri 라이벌 Cortana 발표. Windows Phone 8.1과 함께 나올 예정 과연 성공 할 수 있을까요? http://blogs.windows.com/windows_phone/b/windowsphone/archive/2014/04/02/cortana-yes-and-many-many-other-great-features-coming-in-windows-phone-8-1.aspx
