The title of the new Asterix album, the second since Albert Uderzo retired, was announced at the Bologna Children’s Book Fair Tuesday!
— Astérix (@asterixofficiel) March 31, 2015
22 October 2015 is the announced release date, but I can find no information from Orion Books, the British/American licensee. I can’t even find the backlist? [Speaking as a fan, Orion mucked up the release of the previous volume, Asterix and the Picts, in 2013. Imagine being a Harry Potter fan, and then having to wait two months for books to be shipped to the United States!]
There is an official site for the book. You can watch video interviews!