That's a whole different deal, and has no connection to XNA GS whatsoever. It is not a replacement, nor the future of XNA GS.
But people who don't want to give up C++ for C# might find it interesting.
Oh, and it is free only for personal use. For commercial use, you have to pay.
Ok, but aiming for suspense might disorient other people reading your post. And we wouldn't want that :)
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