Thats really that important? I don't think so seen as FPSC isn't even out yet and whats worse is the answer is already on the forum all you had to do was search... Yes they will all work in x10 however they may need some adjustment and may not work instantly. The models are identical to the ones in FPSC x9 so the only think that will enchance them will be shaders and shadowing other than those enchancement they will be no different. The high quality will be a universal thing so they will look good but unlikely to be as good as most of the x 10 stock media.
Thanks
Adam