The iPad: revolutionary or evolutionary?

Apple’s big media event yesterday produced what everyone had been
expecting: a tablet device, which as we know now, has been named the

Apple is promoting the iPad as a “magical and revolutionary device” but
there was palpable disappointment amongst many who had been discussing
(and speculating) about the device for so long. Living up to the hype
was probably impossible, but is some of the disappointment justified?
Is the iPad as “revolutionary” as Apple would have us believe?