Both Allocine and the AFP are reporting that Jean-Claude Van Damme will star in Astérix at the Olympic Games.
From what we gather (both articles are in French), Van Damme is set to play Roman athlete Cornedurus. Frédéric Forestier looks to be the director of the third Astérix adventure. Gerard Depardieu is expected to return as Obélix, with Indian actress Aishwarya Rai on board as well. Alain Delon is playing Julius Ceasar. Christian Clavier is said not to be returning Astérix.
Filming will start in May, 2006 in Morocco and Tunisia for a release date in December, 2007.
Source: Locus
