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When the new Window 8 comes out will it have file history back up or will we need third party software to regulate that for us.
Yes with the Windows 8 you can and there is an application for file history backup.
You can do this by using Backup and Restore available in Control Panel. (in windows 7 for instance).
This automatically backs up the files in your Library, Contacts, favorites, Desktop.
It depends on your windows 8 edition as there are many editions of window 8 for professional use, enterprise version and many others and it simply depends on your window type that it contains the type of the system that you are looking for. To check brief detail for windows 8 that what type it support please check the following page on Wikipedia and you will be able to get full details for your requirements.
Darrel R gonzale