Maps with locations, webclips, customizable home screens, the ability to SMS multiple people at once, chapters, subtitles, language support in video, and lyrics support in audio are just some of the iPhone updates that will be available today, for free, for all iPhone users. On the iPod Touch, they are adding mail, maps, stocks, notes and weather. This will cost $20 for existing users and it’ll be free and built-in for new users.
Apple has also teamed up with Google and Skyhook to help you triangulate Wi-Fi data. When you go past a Wi-fi hotspot or a cell tower, the phone remembers the data and uses it to calculate where you are.