iOS is coming next Wednesday, October 12, Scott Forstall just said at the “Let’s talk iPhone” event in Apple’s Cupertino headquarters. We’re also expecting the new iPhone to go on sale October 14-ish or around that time. Mark your calendar and clean up and back up personal information on your iOS devices to make a major upgrade as painless as possible come next Wednesday. The software will roll out to all devices October 12, he said. It will be a free update, compatible with the iPhone 3GS, iPhone 4, the original iPad, iPad 2 and the third- and fourth-generation iPod touch.