A new stable version of GRASS GIS 6.4.2 has been announced by OsGeo. This release fixes bugs found in version 6.4.1 of the program and adds a number of new features. It also includes over 770 updates to the source code since 6.4.1. As a stable release series, the 6.4 line will include long-term support and incremental enhancements while preserving backwards-compatibility with the entire GRASS 6 line.
The new wxPython graphical user interface (wxGUI) has been updated with many new features and tools as Python is a fully supported scripting language, including an updated Python toolkit to simplify the authoring of personal scripts, support for NumPy based array calculations, and a Python application interface (API) for the GRASS C libraries. Additionally, Microsoft Windows support continues to mature. GRASS 6.4.2 debuts ten new modules, a new GUI cartographic composer tool, a new GUI object-oriented modeling environment, an interactive Python shell, and improved infrastructure for installing and managing community supplied add-on modules.