4.0.2.118 is supposed to be the final one (unless something serious pops up) and it is a lot more stable than the US 4.0. I would say the rule of thumb goes like this: - if you are happy with your current Poser, no crashes, no odd things, then you might want to wait a bit longer until it is officially final - if you have just any problems with an earlier version, then get it, because there is a very good chance that it will improve the situation