Joey Miller, a longtime employee of LensRentals.com has completed his brief review of the upcoming Sony A7R II. I have a lot of respect for Joey, he's a great shooter and shoots a lot of different cameras and mediums. If you want the opinion of a working photographer, his is worthwhile.
From Joey:
I really think Sony nailed it with this one. Maybe I wouldn’t shoot roller derby with it yet, but for pretty much everything else, I think this is going to be my go to camera, especially once the lens line up is filled out more. I absolutely love the Sony FE 28mm. The Sony FE 90mm macro is nice, but it’s slow. I had good luck with M mount lenses, though, with the Leica 90mm APO-Cron and Leica 21mm Lux really knocking it out of the park on this high res sensor. If you’ve been waiting for a better alternative to your big, bulky DSLR, this might finally fit the bill. I’ve been hesitant to say that for the a7S, a7R, and the a7 II, even though I love those cameras, but the a7R II, I think this is the one. Try it out ASAP! Read the full review
Sony A7R II Body $3198: B&H Photo | Adorama | Amazon