unfortunatly, we can confirm to you: Parrot is not currently working on a Windows compatibility for its application AR.Freeflight.
Thats simple, because no one uses it. Windows phone has less than 4 percent market share, the chance of someone with both a windows phone and Android are pretty slim fractions of a percent. Probably only 5 people in total.
As for windows 8, they have never made an app for a computer OS. I'm guessing your thinking about this for use on a windows 8 Tablet. The main reason they have apps for other tablets is because they pretty much can make an app for the phone and it works for the tablet with little change at all since its basically the same OS for android/Apple phones/tables.
I do think I would be upset myself If I had a windows phone or tablet and there was no app however I can understand how its probably not worth their time and effort for OS that slim to none of the customers use.