I think we are about to see an explosion in the use of tablet devices. Google just announced what looks like will be the best tablet so far in the $199 price range, the Nexus 7; and there are already good choices in the sub-$200 range, like the Kindle Fire.
I believe casual and non-technical users are going to possibly pick up one of these instead of what would have been their next laptop. We already have increasing numbrs of dubs eschewing the briefcase of books and just bringing their tablet to the meeting. Star Trek foretold the future...