It looks like the rumor from a few months ago is true: a treasure trove of lost episodes have been found and will be available for sale this week.
Around 100 episodes were recovered from an engineer who worked for several broadcasters in Africa. This will complete many incomplete serials from the Patrick Troughton years. There are 106 episodes missing in total.
Just in time for the 50th Anniversary!
UPDATE: The BBC will host a press conference and release more info later this week.
UPDATE 2: They have released nine episodes which are available on iTunes.