The last time I spoke (over email) with V. Kalitkin (the developer of MWS Play) he mentioned that he is intending to make a WPF (Windows Presentation Foundation) .NET 3.0 multiplayer and maybe port the MWS Library which is abandoned by the second MWS developer.
It has been years since then and no updates were provided.
I believe he also mentioned that the 2 MWS develoeprs were living thousands kilometers away from each other and rarely talk to each other.
I guess kinds, full time job and other obstacles prevents them from continuing their work.
Since I am the developer of MTG Studio (
http://www.mtgstudio.com), a replacement for MWS Library, I admit I follow quite closesly MWS progress and must admit that there is no such in the recent years.
I managed to convince Kalitkin to provide me with the source code for the George Baxters analysis they use in MWS Library statistics and soon will implement it in MTG Studio.
But he refused to give me the source code for the MWS Play even though I insisted.