We have a discussion thread open on this driver right here.
This driver originally supported only some GCN cards, now it has been modified to support more desktop and mobile cards (you can check the supported card list in the forum post).
Note: Crossfire support might be broken!
So treat this driver as an unofficial one since it has been modified.
The original driver can be found here.
Build Info:
DriverVer=09/02/2014, 14.410.0.0000
CCC: 2014.0902.2157.37601
D3D: 9.14.10.01067
OGL: 6.14.10.13179
OCL: 10.0.1598.5 (OpenCL 2.0 AMD-APP (1598.5))
Mantle: 9.1.10.0034
Mantle API: 94209