Tiger woods will quit pro golf and become a professional gigolo
The world temperature drops 3 degree and people finally realize that global warming is a hoax (al gore lost any political power he had left and grows santa like beard), extreme winter in China, US and Europe kills thousands.
Apple releases a tablet PC but not a real PC per se, more like a larger ipod touch that can download contents from itunes (books, movies, songs, etc). Mac OS released as standalone (can be installed on non Apple devices). Price will be $299 ish.
Google will buy twitter for a kajillion dollars.