50 YEARS OF DOCTOR WHO CULMINATING IN ‘THE DAY OF THE DOCTOR’
http://www.bbc.co.uk/blogs/doctorwho/articles/The-Day-of-the-Doctor-50th-Anniversary-Special-Update
Though the doctor who news site says the BBC have informed us that the broadcast of An Unearthly Child is currently unconfirmed, pending the resolution of issues with one of the episodes - more details as and when we are updated.