Apple is set to unveil the next iPhone on September 10th, according to a new report from AllThingsD. The website is known to have very accurate sources, so people can feel safe in marking their calendars now.
AllThingsD doesn't offer any additional information on the specs of the new iPhone--and if we'll see a lower cost iPhone as well. However, the site also claims Apple "is also expected to formally launch the next version of Mac OS X, known as Mavericks, in the coming weeks," but not at the September 10th event.