We have a discussion thread open on this driver right here.
Unfortunately there are no relase notes available for this driver, but it is the first one to fully support the new AMD Radeon R9 295X2.
Build Info:
DriverVer=03/27/2014, 14.100.0.0000
Catalyst: 14.4
CCC: 2014.0327.2227.38483
Direct3D: 9.14.10.01029
OpenGL: 6.14.10.12872
OpenCL: 10.0.1445.5
HSA: 0.8.0.0.241
Mantle: 9.1.10.0009