Season three is set to start airing on Oct 14th.

Eight episodes will air before the show takes a little midseason break, and "Dead" returns again in February for the second half of the season.

There is some more info in the above link.
_________________________
Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

John Lubbock