I've attached two screenshots. The first is from RealFlight 9.5S and the second is from RealFlight Evolution DirectX 11 Beta. In both instances, the graphics settings are the same. Note the shadows under the fence. The beta version doesn't appear to be doing soft shadows.
RealFlight 9.5S
Realflight DX11 Beta
RealFlight 9.5S
Realflight DX11 Beta