Microsoft announced this morning at its PDC conference that the next release of Microsoft Office will include browser-based versions of some of its main office software products - Word, Excel, PowerPoint and OneNote.
An area of explosive growth that is beginning to emerge is the integration of other senses than sight and sound -- smell, touch, taste, etc. and this is an example of how a company is planning to use the sense of touch to let a person follow a soccer game. Don't know if anyone would do it, but if everybody thinks it is a good idea, as a rule, you're too late.
A new 3D world to explore. I believe we're going to see an increasing proliferation of these. Linden Labs has had the monopoly (and still does), however, there are some key areas that they have not listened to their users - with the teen and lack of an educational grid as an example.