I've read about the yellow tint issue as well, this issue was stated long before the black update.
Well i bought my 1020 one week ago. I shot a lot of photos outside and inside, never had any yellow tint issues. I think they fixed it with the black update (?). But then again, now there is the Cyan update already available.
Oh, and i love the camera, i have never shot such amazing and fantastic photographs. Of course i showed my friends and family members a few pictures, needless to say they were all very impressed. Even a friend of mine who owns a DSLR admitted that the 1020 produces fantastic pictures for such a small device.
About the guy above me, i think his girlfriend just was unlucky that she received a broken camera, that can happen to anybody and any phone brand. Bad luck :/
I also recommend you the photo/video thread here, although i know a place were you can find about 2000 amateur/professional photographs, shot with the 1020, "flickr lumia pool" -google search-
There you can see many fantastic photographs, flickr helped me a lot to make my decision even clearer to buy a 1020. My reason why i bought the 1020, was just the camera.