It's scheduled to air next year to coincide with the 50th anniversary of the original publication of the Herriot books.
Much of the previous series was filmed in North Yorkshire, with many visitors still coming to hunt out the locations.
The Yorkshire Dales have starred in plenty of other TV programmes and films. Here are a few examples that you might have seen?
Emmerdale was originally filmed in beautiful Arncliffe in Littondale, with filming taking place there until about the late 1970s. If you visit Arncliffe today, it doesn't feel like much has changed since as it's such a timeless little hamlet.
More recently, Malhamdale featured in Harry Potter and the Deathly Hallows, when Hermione and Harry camped on the top of Malham Cove. Other scenes features Malham village and Kirkby Malham.
Kettlewell was made famous by the Calendar Girls, which is actually based on the true story of members of the Women's Institute posing naked for a fundraising calendar.
It's now quite a while since Kevin Costner ended up in the river by Aysgarth Falls after battling with Little John in the film version of Robin Hood, Prince of Thieves. Marian also spots Robin bathing in Hardraw Force. Many people still have a fond memory of that scene...
Lad: A Yorkshire Story isn't so well known but is well worth looking out for. It's a heart-warming film that anyone who loves the Yorkshire Dales will enjoy - the story of a young boy whose future seems uncertain until he develops a friendship with a National Park ranger and starts to appreciate the Dales and spending time outdoors.