We have considered implementing DirectX based code with WPF or XNA, but both libraries have turned out to be inadequate for our purpose. WPF does not support sprite; whereas XNA requires shader 1.1 as a minimum that is too much for our customers.
Apart from many accumulative improvements we have implemented a new data view, called mountain view, for high dimensional data. This feature can be considered as 3D extension of the existing value diagram. Mountain view also uses DirectX for fast navigation. The following is snapshot of the mountain view window:
