From the official press release:
WorldWorksGames to Create 3D Pathfinder Terrain
Regular Releases Bring Adventure Path Encounters to Life
Paizo Publishing, LLC, creators of the popular Pathfinder series of tabletop fantasy roleplaying adventures and accessories, today announced a partnership with WorldWorksGames that will bring three-dimensional terrain sets to gaming tables around the world. Pathfinder Terrain will detail key encounter areas from the Legacy of Fire Pathfinder Adventure Path, with a terrain kit for each adventure. Each full-color downloadable PDF-format Pathfinder Terrain kit retails for $16.99, and will be available for purchase at paizo.com in late February 2009 and at other quality online retailers shortly thereafter. Additional releases are scheduled on a monthly basis.
The first release, Ruined Undercrypt of Kelmarane, supports the first Legacy of Fire adventure, "Howl of the Carrion King," by Paizo Publisher Erik Mona. "It's really amazing to see my dungeon come to life in glorious three dimensions," says Mona. "Gamers are going to flip with excitement when these kits hit the table. All of us at Paizo are absolutely thrilled with the quality WorldWorksGames has put into their Pathfinder Terrain kits."