You may have noticed that 'PMD' is being replaced with 'PMX' in newer versions. The program still supports PMD and can switch back and forth between the two (provided you disable any of PMX's fancy features before trying to switch to PMD) but the latest version (as of this post) also allows you to import Wavefront .obj files along with DirectX (.x).
Also, we now have a 'Softbody' tab (in addition to a splash screen, and I think this one loaded a bit faster for me. When this PC was new they loaded instantly though, but this is a definite improvement!) and a bunch of little buttons under most of the list boxes for moving stuff up and down without having to access the right click menu. I'm probably late to this party but I'll check back when I've done some s'plorin'