After working pretty continuously for the last few months, I finally have the important subset of features finished for me to release OctrayRewrite to people.
The most significant feature was de-noising. If you tried the old Octray on github, you'll know it was basically unplayable due to the amount of noise and poor filtering. Now that this has been addressed, I think the shaderpack is fairly playable (although there is tons of room for improvement, and I have lots of ideas for the future).
For me, it was very important to improve playability, without sacrificing the ability of the shader to turn into a production quality path-tracer when you stand still for long enough. I'm happy to say I think this has been achieved.
The latest version is available to all $5 supporters. Thanks to those of you supporting me already :-)