I think the biggest difference is going to come from vastly increased amounts of physical storage memory.
With lots and lots of memory, a lot of devices become practical. Pocket-sized $200 multimedia devices that fit in your pocket and can hold an hour of DVD-quality video and an almost unlimited number of still pictures and MP3’s. You’ll be able to buy cheap disposable cameras that take 20 pictures and then spit a little memory stick out that can be plugged into your univeral memory port at home. With cheap memory, there will be music videos in cereal boxes and video games in happy meals. You’ll have a personal memory device on your keychain that can carry your photo albums, copies of all your personal documents and work documents, a novel or two, a digital signature protecting it all.