Earlier today BBC America released a Teaser Trailer for Series 9 of Doctor Who. There is no official date yet. All we know is that Series 9 will air in September, later than Series 8. Series 9 filming is taking a break soon due to Comic Con.
The 75-year-old actor who has appeared in Harry Potter as the wand master in Diagon Alley and in Doctor Who as the War Doctor in 2013 and has been in so much more. He has said he will continue with all his work despite being diagnosed with cancer: