New iBooks And OSX Beta Released

zephc writes: "Apple has announced its iBooks, now with more RAM and DVD drive options, and (sweetness) Firewire (among other things)." Looks like it's at least three new models - and in other Mac Expo news, as promised OSX has been released in beta. Of course, it's a beta that costs $29.95 in the Apple Store, but whatever. MacNN has some coverage as well, as well as photos from the floor -- including the infamous flooding incident.