In November 2016, Éditions Mnémos will be publishing Opar, Intégrale, a French-language omnibus encompassing Hadon of Ancient Opar, Flight to Opar, and The Song of Kwasin. This is the first French collection of the original Khokarsa/Ancient Opar trilogy, and also marks the first translation into French of The Song of Kwasin, which I coauthored with Philip Jose Farmer. I don’t yet know who the cover artist is but I love the artwork!*
* Update: According to the Internet Speculative Fiction Database, the cover artist is Grant Regan and the translator of The Song of Kwasin (Le Geste de Kwasin) is Laura Dupra. The translator of Hadon of Ancient Opar (Hadon, fils de l’antique Opar) and Flight to Opar (Fuite à Opar) is George H. Gallet.