I 've just returned to previous version. The newest one is pretty cool but at this moment completly unusable for me...sorry.
It crashed on my old scenes, which were well rendered in the previous version, and on new scenes just with one cube and one light source. I love corona for C4D. It is great, but to be honest I can live without IR. I would prefer have corona with RoundEdges shader, render selected and other things working corectly. These things are more important to me. I would also like to see exclude/include (reflections, refractions, shadows etc.) feature, something like in composition tag but between selected objects. Thanks!