Received this on Wednesday and it is working perfectly. The build date was February 2015. At first I thought there was a dead pixel in the top left corner but discovered it was only on Battlefield 4 and is a bug many have reported. Fingers crossed it stays this way as it is a great monitor.
I don't own this yet, but I'm glad your monitor has no issues yet. I'm planning on getting this later on in the year around November...hopefully all the issues everyone has come across will have settled down by then?