Apple has released the first developer preview of Mac OS X Lion and updated its information page on the operating system.
With this announcement comes new information on Lion's features, including AirDrop, which allows for zero-configuration, wireless file sharing between Macs; a global auto-save, which saves your work for you and Versions, which automatically saves versions of documents you're working on and provides a Time Machine-like interface for browsing them.
Mail.app has also been re-hauled and closely rese
