from http://decider.com/2016/01/27/bbc-poised-to-announce-new-streaming-home-for-doctor-who/:
"A BBC spokesperson told us that American Whovians will still be able to stream seasons 7 – 9 on BBCAmerica.com and that the series will still be available through Amazon Video, iTunes, Google Play, and more VOD platforms. However they added: “We hope to announce a new digital partner for Doctor Who shortly.”
So, let's see what happens!