Makes sense.
A - The current Macbook Air compares unfavorably when set next to an iPad. It needs to look like the iPad's big brother in both size and price (slightly more than the iPad for each, but not a lot more). Right now it's much too expensive to fill that role.
B - Also, I'm betting the next Macbook revision will make it thinner, at which point the 13" Macbook Air will seem much more pointless since they'll seem much more similar than they do now. They do need to downsize the screen if they want it to be the lightweight alternative to the regular Macbook of the future.
A - The current Macbook Air compares unfavorably when set next to an iPad. It needs to look like the iPad's big brother in both size and price (slightly more than the iPad for each, but not a lot more). Right now it's much too expensive to fill that role.
B - Also, I'm betting the next Macbook revision will make it thinner, at which point the 13" Macbook Air will seem much more pointless since they'll seem much more similar than they do now. They do need to downsize the screen if they want it to be the lightweight alternative to the regular Macbook of the future.