Builds for a new version of Mitsuba are now available for download. Highlights of this release are:
- Numerous bugfixes
 - Significantly improved COLLADA importer: it should now be able to handle most scenes from Maya, 3ds max, Blender and SketchUp
 - Basic graphical user interface for running the importer
 - Initial documentation, including some on the import process (available on the documentation page)
 - Support for environment sources in the realtime preview
 - When pressing the stop button while rendering, the partially rendered scene now remains on the screen. Pressing the stop button a second time switches back to the realtime preview
 - The user interface now has a fallback mode when the graphics card is lacking some required OpenGL features.
 - Create default cameras/lightsources if none are specified in a scene
 - Support for file drag & drop onto the user interface
 - The Mitsuba user interface now also doubles as an EXR viewer / tonemapper. Drag an EXR file onto the UI or open it using the File menu, and the image opens in a new tab. Afterwards, it is possible to export the image as a tonemapped 8-bit PNG image.
 - The realtime preview now has a ‘force diffuse’ feature to improve convergence in scenes with lots of glossy materials.
 - Two different navigation modes can now be chosen in the program settings
 - New material types: composite, difftrans, transparent, mask.
 - ldrtexture: support for loading uncompressed BMP and TGA images.
 - Switch to Xerces-C++ 3
 
Very cool – I’ve been tracking the progress on the blender artists thread and just wanted to say that this looks great. thanks!