Glare Technologies, a New Zealand and UK-based company which specialises in high-end 3D visualisation software, have announced the release of the 3.6.7 beta version of their rendering products Indigo Renderer.
The big change in this release is the reworking of foreground alpha rendering.To try it out, tick 'foreground alpha' in the render mode settings.If you then save out a render (e.g. with the 'Save Image' button), the foreground will have alpha one, and the background (sky etc..) will have alpha zero. This should allow simple and high-quality compositing with alternative background images.There have been some major internal changes to make this possible, so there are likely some bugs to iron out.
What's fixed in 3.6.7