Apple is supposed to hold iPhone 6 event on September 9.
September 9, 2014 is a Tuesday, so that checks out. The fact that Re/Code has big reputation as it has emerged out of the AllThingsD venture.
If Apple does things like in the past, then the new iPhone 6 would go on sale on Friday, September 19. It would be perfect timing for Apple to maximize the holiday quarter for iPhone sales. Rumors though say that the larger 5.5-inch iPhone 6 has production issues and might come later.
If true than the 4.7-inch iPhone 6 goes on sale first, putting pressure on early adopter not to jump the gun and wait for the larger iPhone 6 that maybe has more performance as well besides the bigger screen.