Apple has launched a series of new iPhone Tech Talk World Tour events to be held in cities around the globe between October 22nd and December 9th. Unlike previous Tech Talks held last year that focused on building and optimizing web applications for the iPhone OS, these new events focus on app development using the iPhone SDK. A promotional email sent out to registered iPhone developers reads, “Learn about the tools and technologies you’ll use to create great iPhone applications, then work with the experts to optimize your code, refine your user interface, and apply the knowledge you gain from the sessions.” Events are scheduled in more than 20 major cities worldwide, including Chicago, Paris, Stockholm, Delhi, and Sydney. Apple’s iPhone Tech Talk World Tour events are open to all registered iPhone developers; admission is free. To register, visit Apple’s Tech Talk web page.