First time for Stosur Surprising she doesn't play Eastbourne.
Its because the Eastbourne surface is a lot like hardcourts. This means when she does well here and she goes to wimbledon, she gets shocked by wimbledon courts. These dutch grass courts are much more like grass, less kick and better for slices, so it will prepare her bettwer. Also, shertogenbosch always puts on a good tournament (will have hawk eye on 2 courts this year!!!) and she may like to try something new