Hey,
I like it. A step in the right direction. Nice.
I just love that you can pick the cam. resp. func during the rendering now.
Also the image saving + new formats are awesome !!
One thing i noticed though (I think Smart already mentioned it).
It currently doesn't respect the aspect ratio of an image. It scales everything down to 800x600, but if my image is not in landscape, but is a portrait (600x800 for example), then it still streches it to fit 800x600. I think you should consider the image aspect too. (for 600x800 the aspect is 0.75 so when scaled down the correct resolution would be 450x600). That's how the Maxwell demo does it. Otherwise you can only render in landscape and only with 1.333 ratio.
[edit]
Has the displacement changed too? I'm getting different results compared to 1.18.