From bottom to top: 15-inch MacBook, 13-Inch Macbook, 13-inch MacBook Air, and an 11-inch MacBook Air.
Steve Jobs in front of a chart showing the specs for the four new MacBook Airs.
The smaller 11-inch MacBook Air on top of the 13-inch MacBook Air.
A look at the new MacBook Air's aluminum unibody shell.
The two new MacBook Airs (right) next a 13- and 15-inch MacBook (left).
A slide from the Back to the Mac event that lists some of the highlights of the new MacBook Air.
Another look at how the two new MacBook Airs (top left) compares to regular MacBooks (bottom right).