Rovio announced today that their Angry Birds animated movie will be released by Sony Pictures, and that the worldwide release date is currently set for 1st July, 2016. Rovio themselves - in the Marvel mould - are developing, producing and financing the film.
The film is being produced by John Cohen (Despicable Me) and executive produced by David Maisel (Iron Man). No word on a director or writer yet though.
In the meantime, Rovio's Angry Birds Toons are available to watch in-app every weekend!