Barely a month after the last major update, Avis Nocturna has upgraded its 3D terrain rendering program TerraRay to version 6.0, bringing with it a 25-50 percent performance gain thanks to an optimized renderer, which also now fully utilizes 64-bit processors. The new version also features volume-based cloud rendering, new rock presets and a new algorithm to generate them, a new grass algorithm and other various improvements.