My boss at the Student Union Computer Store that I work at told me (after having talked with his Apple Rep) that apparently the new ibooks come in two colors. The 12" CDROM is a different color (more of a grey) than the 12" COMBO and the 14"(snow). The only hard proof that I can point others to is the listing for an additional battery at the Apple Online Store
12" CDROM
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M8956G/A
12" COMBO
http://store.apple.com/1-800-MY-APP.../wo/LTg5Z0asVDbrmcmewO1/1.3.0.3.27.8.3.8.13.0
you can also see both listed in the "other options" section at the bottom of the "tech specs" page for the ibook
just thought i'd share
12" CDROM
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M8956G/A
12" COMBO
http://store.apple.com/1-800-MY-APP.../wo/LTg5Z0asVDbrmcmewO1/1.3.0.3.27.8.3.8.13.0
you can also see both listed in the "other options" section at the bottom of the "tech specs" page for the ibook
just thought i'd share