I was interested in giving the Windows 10 Preview a try, but it was highly recommended that it not be installed on one's main computer! So I would have needed another computer to install it on, and I was not going to buy/build one just for Win10 Preview. But had I done so, I would have had a good idea of how FSX works in it. :-/

While I have reserved my 2 free copies, one for my main computer (in which it will replace Win8.1, and be used as a second boot system), and one for my Laptop that will replace my Win7 installed on it, it won't be happening until around the last week in August.