Sigma has today posted (as promised) firmware v1.4.0.1302 and Photo Pro v1.1 (1302). The firmware has three major features; support for Lexar WA (write acceleration) technology, a bug fix for occasional hangs in long exposures, compressed preview images resulting in smaller X3F files. The new version of Photo Pro has a wide variety of fixes, the most important of which is improved JPEG output quality by using 4:4:4 downsampling (fully sampled chroma). UPDATE: Image quality comparison included.