If you're interested in seeing more info on d20 Modern and third party support for d20 Modern the Gaming Herald should be in retail stores or pretty close to them now. This is a 16 page newspaper (like a college paper in size) and the October issue is co-sponsored by WotC to help promote d20 Modern.
This issue includes flavor and crunchy bits for d20 Modern (WotC), Tales of the Explorer's Society (Silver Acorn Design), Small Arms of the World (Agent's of Gaming), the Second World Sourcebook (Second World Simulations), Operation: Fire Eagle (Semi-Auto Games), The Main Event (Fantages Studios), the Cyber Style series (Dark Quest Games), Metal Gods (RPGObjects), Digital Burn (Living Room Games), Dark Inheritance (Mythic Dreams Studios), Vulcan's Cauldron (Troll Lords), Penumbra Fantasy Bestiary (Atlas Games), Edine's Debt and In a Secret Commonwealth (Kismet Games), Odyssey Prime (Bizzaro Games and Eden Studios), a preview of some Dragon Earth material (by Alan Kellogg), Complete Guide to T-Rex (Goodman Games), and The Hunt: Fall of Man (Mystic Eye Games).
I was particularly pleased to already see announcements for a few modern era scenarios. These have always been the hardest thing in the world to find because without a unified, popular rules system publishers have a hard time making money on them. Between CoC d20 and d20 Modern I hope we get a lot more support for modern era gaming of all sort.