I have to admit to being underwhelmed by the new "ocean" thingy. It appears to me it has no mechanism for shore/object detection or interactive ripple generation. So already a 1990's shareware plug-in for Bryce would do better at making a simple bird bath. As to the others -- the lighting mode sounds interesting, but all in all this looks like functionality that was already available via the proper shaders and displacement. Oh. I've been reading up, but so far haven't encountered evidence that transparency of a given volume of water changes dramatically with temperature or pressure. The main reason deep water is darker is because it is deep. (And even if an increasing opacity is wanted as a form of forced perspective, Carrara's existing environmental shaders can already handle this task). Here's hoping the next announcement is of a revamped and improved UV mapper!