Hi Guys
I'm part of the team developing Shaderlight so it's great to hear so many of you are giving the beta a try. As a beta, the software is not yet feature complete however the full release planned for later this year will contain more advanced lighting features as well as our trademark MELT functionality which lets you update certain scene parameters without restarting the render. The full spec can be found here: http://www.artvps.com/content/shaderlight/sketchup/technical-specifications
If you do have any comments or suggestions, we'd love to hear them so we can feed them in to the development process.
We look forward to hearing from you!
Kate