Sorry folks. Not allowed to post full size samples.
All I can tell you is that a few hundreds of these are out there for "extended trials" testing.
Can you answer questions though?
I'd love to know just how sharp it is? Would you say at f2.8 it's as sharp as the 70-200 f2.8 II?
At 70mm f2.8, the 70-200 II is comparable to this. I'd say the 70-200 is sharper.
However, at all other stops, the 24-70 appears sharper.
The 24-70 focuses faster. Not by much, but the difference is noticeable.
My usage is limited to when the actual "tester" is present and available.
Tried and shot with on the 1D IV and 5D II.
I am willing to answer questions. No samples allowed yet, however.