edit: The forum thinks the AMD link is a suspicous link, you can google the title of this thread to find the download (on the official AMD site)
This looks very encouraging... shame it's windows only
Hoping AMD will release a linux version soon.
In the meanwhile, can any windows users shed some light on this? Is this a drop in replacement driver for amdgpu-pro 17.30? What kind of hashrate increases (if any) are people seeing.