Hi,
G16 import is now available with the latest Camera RAW update (13 Nov, 2013)...
I can confirm that .cr2 images are now recognised and imported, but there's a caveat... image proportions are distorted.
I have a number of raw+jpegs shot in 16:9 proportion. The jpeg imports fine with correct proportions.
The raw version includes the bits of the image that are cropped out when creating the 16:9 framing, but the image is still displayed at 16:9 in aperture, so looks squeezed as a result. Image dimensions are reported as being the same between jpeg and RAW, even though the RAW contains more area from the subject.
It's like aperture knows it is a 16:9 image, but then doesn't apply the crop, but instead re-scales the whole uncropped image area to fit within 16:9 format. Whatever's going on, it's wrong!
Curiously, thumbnails from RAW files in the finder are cropped correctly, showing exactly the same image and proportions as the jpeg. iPhoto also seems to get it right. This suggests it to be a bug in aperture rather than the importer itself...
Cheers
Rob
Rob