Just saw this on Adamant's site. (note: I'm not affiliated in any way with Adamant... just looks cool and has the author of Iron Lords of Jupiter which I enjoyed to no end... )
Work has begun on a product that we're really excited about: MARS D20 will be a D20 setting, usable with any D20 system -- Fantasy, Modern or Future, inspired by the "planetary romance" genre popularized by writers like Edgar Rice Burroughs. Science-fantasy adventure and intrigue under the Moons of Mars! The book is being written by Lizard (the author of the Polyhedron D20 minigame Iron Lords of Jupiter) and Gareth-Michael Skarka (author of CORSAIR and much of the THRILLING TALES line), and will be released as both a PDF and a printed version.
Work has begun on a product that we're really excited about: MARS D20 will be a D20 setting, usable with any D20 system -- Fantasy, Modern or Future, inspired by the "planetary romance" genre popularized by writers like Edgar Rice Burroughs. Science-fantasy adventure and intrigue under the Moons of Mars! The book is being written by Lizard (the author of the Polyhedron D20 minigame Iron Lords of Jupiter) and Gareth-Michael Skarka (author of CORSAIR and much of the THRILLING TALES line), and will be released as both a PDF and a printed version.