There is no issue that I can see regarding any left side softness. If you are referring to the image of the leaf on cement, it's shot wide open and the camera is not 90 degrees with the ground. This is the expected result.
CA - I found one image, the one that has a small bridge over a creek. It's deliberately underexposed by 2.5 stops, and there is purple fringing where the shadowed branches are silhouetted against a bright sky. This will cause CA with any lens. However, even though this image is jpeg only, 30 seconds with Lightroom removed all traces of fringing.
I've processed most of RAW images. I am indeed seeing what everyone else saw with the RX1/r - the images just explode off the monitor! The DPR images aren't show stoppers or award winners, but they do show what the camera can do.
I'm sure we'll see lots more in the next few days.
As for left side softness: take a look at DSC00481. Shot at f2,8. Pin sharp in the center, falling off more and more to become rather blurry at the left edge. The right-hand side keeps sharpness visibly better to the edge.
Regarding CA: Look at DSC00523, shot at f4,5. Windows (to the right) and flagpoles and black pylons to the left, it is really all over the place. Easy to see, and easy to remove, but it's there. And I can point out others.
However I think one should not read too much into this, after all we have a sample of just one, and as Jeff points out above, some slight focus error might influence the results.
Impressive shadow-recovery btw!