It was announced in December that David Tennant will voice Scrooge McDuck in the upcoming DuckTales television series which will consist of 21 half hour episodes and two one hour specials. The series will make its debut in Summer 2017.
At the time of the announcement Disney also posted this video online and it has already had over three million views on YouTube!
Apologies if the video does not play in your country.
DuckTales section of DavidTennantOnTwitter.com