I was extremely pleased to see this update. My GH2 RAW files were totally unworkable on Aperture and I was forced to download a trail version on Lightroom. Here the RAW images have no colour shift to speak of. In Aperture there was a brutal shift to the green and there was extreme contrast.
With the new Apple RAW support much of the problem has been corrected. However, while the extreme contrast and green shift is under control, there is now a slight magenta shift. While correctable, this should not happen, nor has it happened all the years of using Aperture and RAW.
Meanwhile the same RAW files in Lightroom come out beautifully. In fact I find myself drawn to Lightroom and may have to buy a serial number.
I would appreciate hearing from others using the GH2, Aperture and the latest RAW compatibility update.