With iOS 4’s launch only days away, we thought it would be interesting to provide a complete walkthrough of the new operating system. iOS 4.1 will be a free upgrade to all iPhone 4, iPhone 3GS, iPhone 3G, iPod touch 2G, and iPod touch 3G users. It will also come standard on Apple’s newly announced 4th generation iPod touch. Bug Fixes: As promised, Apple will be providing fixes for the three major