About Optix next beta ETA?

Hi at siggraph in july Nvidia talked about what’s next in Optix…
I wanted to know if we are getting some beta this year to play with new features?
if not some ETA?

Instructions for downloading the public beta will be placed on the forum very soon.

Interesting any update on beta release?
also seems next month we will have Maxwell hardware (rumors of geforce 750 gm107 based) will perhaps will require new CUDA 6? anyway can we expect support for this new GPUs in upcoming beta?
also tegra k1 is coming with cuda support and at GTC last year optix on cuda arm was shown will this beta also support arm cuda platforms like tegra k1?