Cycles with caustics finally! (early development)

NMEE technique? Looks nice and fast. However I hope we will see path guiding (so we could have reflected caustics and out of shadow area caustics)- and if it will have support for volumetric caustics with dispersion that would be <3 Also wondering will cycles-x support for openvdb deformation motion blur (for dynamic meshes) - when using mantaflow with openvdb - deformation motion blur isn't working - also importing dynamic liquid or smoke / fire simulations from third party software with openvdb doesn't seem to support deformation motion blur :/ Flip Fluids had some problems to support motion blur because of Blender's API i guess.

I am just little bit concerned/worried from these small "problems"/limitations because there is so much good 3rd party addons (under development) like github.com/zenustech/zenoblend and github.com/taichi-dev/taichi_elements or even flipfluids but which can't support motion blur because of these limitations (?)- even openvdb import isn't solution (especially when using volumetrics - but also dynamic meshes doesn't have motion blur even when openvdb could offer needed data)