With all the excitement around the official launch of the new Pens, I'm surprised that nothing has surfaced regarding the IR patents for focussing. Have I missed something? If there is no IR-related technology being deployed, then the R in the new lenses may just refer to 'Revised' or 'Retro' (metal finish), ie, cosmetic, rather than special IR coatings, etc. Oly has referred only to the enhanced processor as the explanation for the speed increase. This may mean that a firmware upgrade in the existing kit zoom II, or the 40-150mm would give comparable results. I'll be interested to see what exhaustive reviews with both Oly and Panny lenses shows.