Well, that depends on Microsoft's intentions on controlling the gaming industry. If they were smart, which they definitely are, I would assume that it would be SOLELY ON XBOX ONE, where as if they were to take a smoother, more open minded approach, they may encorperate the ability for us fine PC gamers to download it as well.
Now, you may notice, however, that Halo Reach, Halo 4, Forza 4, Forza Horizon, and many other games, remotely recently released, are not available on PC.
Based on current intel, the following Xbox Only games are also available on PC:
* Titan Fall
and others that may not be up for sale on the Game Stop website.
I could suggest going with Xbox One, if you are in for exclusives and want to be able to connect to your Windows PC. However, if you are in for the full out HD gaming experience, it has been brought to our attention, that COD Ghosts will be in only 720P on the Xbox One, where it will be in FULL 1080P on the PS4.
It's all based on personal preference, and who you listen to. I don't sway people toward any one console, unless I am swaying them toward PC. Just think, if you had PC, you would have access to games that aren't yet available on console. Games like Diablo, Planet Side 2, World of Warcraft, Warframe, Minecraft; think about it, all games that originated on PC and is venturing their way to console.
If you need any other help, or have any other questions, please feel free to contact me.
Thanks
Bradley