I just got back from Denmark and Sweden. I took over 800 pictures with the II on the trip. I haven't gone through them, but if the results are anything like past photos with this camera, some may well be stunning (depending upon the skill of the photographer more than limitations of the camera. It is a really handy size. I carried it in the right pocket of my pants. I occasionally missed having an OVF, but not really anything else. I've made good 13" x 19" prints from this camera before, and they look great. I still have some blank walls in my house, so if anything from this trip is really good, I'll print them up and spend some real money to have them framed, as in the past.
When full details come out about the III, I'll decide then whether to get one. My annual video project would have been while I was away. It would be nice to have 4K for next year to facilitate editing. I could crop a lot and still have rather good 1080p or 720p. I've used the 4K in my iPhone for that purpose, though it is more needed because of the lack of a zoom lens. In the fall I have scheduled a trip to Italy for a couple of weeks and then a Greek, etc., islands cruise. The cameras are small enough that I could take the II along as a backup and still have much less size and weight involved than if I took one of my DSLRs.
I haven't experienced any dust problems with my II, even out West. I understand how that could be a factor for some folk.