Windows 8 to have improved file copying functions

Microsoft has apparently brought about some tweaks in the way files are copied which will improve the user experience. For example users who are transferring multiple files can pause or cancel any of the current copying files from the list. So if a certain set copying task is of higher priority you can cancel or pause the others to make the highest priority task speed up.

In addition to this Windows 8 will also give a graphical representation of the file transfer and information such as the average transfer speed, the transfer speed on a time graph and of course the size and number of items remaining. 

And finally the copying conflict function gets a little revamp too showing you the size and a thumbnail of both files and giving you the option to keep both or keep one.

Source