There's a rumor the iPhone 6 may come with a barometer. This may end up being HUGE for the weather forecasting industry. We're suddenly going to have a fleet of millions of devices containing both GPS and a barometer. Combined with an appropriate app, it will be possible to get precise readings and trends of atmospheric pressure across wide areas. Who knows, maybe that scene in Back to the Future part 2 where the weather service perfectly predicts the end of a rain shower will become a reality. Thoughts?