My comparison of Lion to Snow Leopard. My viewpoint is the Lion Server installation, comparing it to non-server Snow Leopard. The non-server Lion installation may be different. • System Preferences >*Sharing options: Internet sharing:[/b] channel "Automatic" is gone. Instead, channel 36, 40, 44 and 48 can be used in addition to channel 1 to 11. • System Preferences > Speech: Voices: fewer standard voices. Additional voices can be downloaded, including voices for other regions and languages. Size: For example, the Belgian Dutch voice "Ellen" is 142 MB big. •*System Preferences > Display: Resolution: minimum resolution is now 800 by 600, up from 640 by 480. Resolutions are ordered in reverse, with the highest at top. Brightness bar: now positioned right of the Resolutions pane, instead of at the bottom. • System Preferences > Exposé and Spaces: New in screen corner menus: - Launchpad - All Windows (starts Mission control instead) •*System Preferences > Dock: New option: Show indicator lights for open applications. Standard toggled off. • System Preferences > Appearance: Appearance: can't be changed in the developer preview. Place scroll arrows item Replaced by: Show scroll bars: Use smooth scrolling: toggled standard on. • System Preferences > Universal Access: Seeing: Text is normal sized, not oversized like in Snow Leopard. • System Preferences > Internet Accounts New pane: Internet Accounts. • Menu bar Airport: renamed Wi-Fi. • Apple menu > Restart, Log out, Shut down: A new checkbox is marked to reopen windows when logging back in.