Version 1.4.0 build 5650.
Maybe I'm doing something wrong, but I've just upgraded to the latest version of PS and I can no longer view the dense cloud. The menu option: Model -> View Mode -> Dense Cloud gives me another sub-menu with "Filter by selection" and "Reset filter", both of which are greyed out and neither are what I want.
Build 5076 allows viewing the dense cloud under that menu item, so either it's moved and I can't find it or it has been left out by mistake in 5650.