Buoyed by a bullish report on smartphones from RBC Capital Markets, Apple share prices shot up by more than $4 on Tuesday. Share prices of Research In Motion and Palm also rose. If RBC is right, we're in for a wild, high ride. If it's not -- hey, the iPhone is about to go into China, the next iPod touch will probably have new features, and perhaps an iTablet is on the way.

A Slip, a Slide, and a Bounding Bull Run for Apple