Apple is worth watching, more than any other stock on earth right now..
Why? Apple has been driving the NASDAQ 100 higher, which has been driving the S&P 500 higher, which has been dragging other stock markets around the world higher (relatively reluctantly)
The trend line break means one of two things. Either Apple is beginning to accelerate higher, set to rise even more rapidly than before. Don't rule this out. Alternately, if Apple falls back below the top trend channel line, it will have completed a throw over (in other words, false break), and will then likely begin a new down trend.