xcode 7 for windows

No, for now and in the near future.

No. Apple's IDE is designed only for Mac.

Feel free to use the bug reported to make requests for things you'd like to see in the future,

You can compile iOS and OSX code only using a Mac so far so unless that changes there will be no Xcode for non Mac OS pcs. But there are third party solutions that will enable you to develop on Windows but they will still use a networked Mac with Xcode on it to compile seamlessly.

You can use phonegap such a cross-platform development tools, you can directly develop iOS iOS iOS, after the shelves can use a tool Appuploader, can help you directly on the Windows system iOS iOS App Store, I was the development of such shelves, And the tool Appuploader can be used free of charge, great, hope can help you.The whole process does not require Mac