Apple has today released a preview for developers of its new operating system, OS X Lion, expected to launch later this year.

Although many of the features have already been detailed by Apple CEO Steve Jobs, that hasn't stopped Apple adding some more, one of which is a new feature called AirDrop that allows you to copy files wirelessly from one Mac to another with no setup.

“With AirDrop in Mac OS X Lion, you can send files to anyone around you - wirelessly,” says Apple. “AirDrop doesn’t require setup or special settings. Just click the AirDrop icon in the Finder sidebar, and your Mac automatically discovers other people nearby who are using AirDrop.”

According to Apple “You’ll even see contact photos for those who are already in your Address Book.” Users will be able to “share a file, simply drag it to someone’s name” and, “once accepted, the file transfers directly to the person’s Downloads folder.”

Users will be able to stop sharing with other people simply by turning off AirDrop. It’s also worth pointing out that you’ll need to be on the same Wi-Fi network for it to work, but still it’s likely to be very handy in an office environment.