German review site.
I am honestly shocked myself. Seems that LensRental (USA) has received 20-25 copies of the lens. Awaiting their test results which will be very revealing.
LensRentals results are out.
Looking good. Small size. Low weight. Little barrel distortion. Low CA. Wide-open performance is similar, if not better than that of 24-70 f/2.8 Mk2. Expensive. But OK since I plan to get it as a kit. Usual QC problem wrt decentered elements.