I found some details on a French forum about new volumes and creative teams. So this is the current line up for upcoming releases from Glenat:
Red Nails (Régis Hautière, Didier Cassegrain & Olivier Vatine) - 11th September 2019
The People of the Black Circle (Sylvain Runberg & Jaekwang Park) - 6th November 2019
The Hour of the Dragon (Julien Blondel and Valentin Secher)
A Witch Shall be Born (Jean-Luc Istin & Thimotee Montaigne)
Xuthal of the Dusk (Christophie Bec & Stevan Subic)
Rogues in the House (Paulo Martinello)
The Man-Eaters of Zamboula (Stéphane Gess?)
The Tower of the Elephant (Etienne Le Roux & Thierry Ségur)
The Phoenix on the Sword (Guillaume Mautalent & Mac-Antoine Boidin)
The God in the Bowl (Doug Headline & Emmanuel Civiello)