Great pictures showing the New Dyson Cinetic Upright (DC75 I think??) dy0nb0y.
I did wonder if the bigger ball was to accomadate the bigger cinetic cyclone technology. Do we know what the motor wattage is?
Looks very narrow on the inner collection chamber(s) for the fine dust to collect. I see there is a red fill line on the main bin now.
I would still think you will get some slight fine dust collect near the oscillating tips but obviously not on them, I mean on the gaps between each cyclone tips. Maybe the next future development would be for a 'take apart' cyclone to periodically wash out!!
One thing I notice is when you empty any Dyson bin be it into a kitchen bin, dust bin (trash can) or into a plastic bag the rubber seal on the trap door does get a bit dusty from emptying it. I used to wipe mine clean to make sure I was getting a good seal. My thought was any dust and grit on the rubber seal will not give a good seal once closed. Plus I use to remove the seal periodically to clean as dust and grit did get trapped under the rubber seal where it fits around the trap door.