I just published my review of the Sony FE 4/16-35 ZA OSS T* (what a name) on my blog.
- excellent center from f/4
- very good corners stopped down
- effective image stabilizer
- very good built quality
- nice sun stars
- versatile zoom range
- not very well balanced on the a7, probably better on the a7II
- not as well weather sealed as similar lenses from other manufacturers
I think it is a very good lens, I was very happy with the images I got. It's size and weight contradict the small form factor of the Alpha 7 series a bit and the price is a little high but because of the very good performance these are acceptable compromises in my eyes.
If you have any questions just ask ;-)