Illusoft has released another update to their Collada 1.4 plugin for Blender (now version 0.2.65) with basic physics support. Be advised! You will need the latest CVS build of Blender to utilize the physics portion of the Collada script!

Here is the run down for this release:

export – export paths relative to collada file (GUI)
export – export Texture information from Material
import + export – store usersettings (from GUI)
export – export only current scene (GUI)
export – disable export physics (GUI)
import + export – physics, cylinder + cone support

Bugfix 0000040: Orthopraphic camera fails to export.
Bugfix 0000037: Cylinder and Tapered Cylinder need 2 radii.
Bugfix 0000031: Static meshes should always export a Rigid Body, with false

Chris Kulla has released his latest version (0.06.3) of Sunflow, the open source, platform independent (thanks to Java), photo-realistic rendering system as well as the Blender export script.

From the site:

A new version has been released which fixes a number of small bugs and adds a few new features and options.

The biggest feature change is to how color spaces are handled. Sunflow assumes linear color data like most renderers, but now offers methods to apply or unapply nonlinear color transforms from this data. At the moment only the sRGB standard curve is handled, more options might be provided in the future. Floating point textures/output images are assumed to be linear while 8 bit images are assumed to be in a non-linear colorspace. Likewise, the default framebuffer assumes your monitor matches the nonlinear sRGB profile curve and corrects the image accordingly for display. The advantage of this change is that the colors you specify during modelling/texturing will correspond to what you see in your rendered image, and the lighting calculations will be done in a correctly linearized colorspace. In older version, even when specifying a gamma of 2.2, the resulting images could appeared washed out or too light.

You may download the updated release and blender exporter from the downloads section as usual.