The same bugs that have being reported many months ago are still present in 15.7 driver. (System: Win7 x64, Radeon HD6950.)
First of all not working clEnqueueWriteBufferRect/clEnqueueReadBufferRect until you specify CL_MEM_ALLOC_HOST_PTR on allocation. I'm not going to add specific workarounds to public version of my application just to please AMD drivers – it still has status "not working on AMD".
Second issue is 15.7 driver is again creating temporary files OCL*.tmp in current folder when creating OpenCL context but now not even deleting them! And of course if current folder is not writeable creating OpenCL fails.
Will those issues ever be fixed? What were tester/QC team doing that they didn't notice that driver marked as stable/WHQL adds new file to current folder each times something uses OpenCL?