This joke is getting a little old. What is the chance for an employee to own an iPhone 5 and actually lose it? again. Apple is probably the most skilled company at giving out "leaks", because many times people don't even realize the leak was seeded by Apple.
Look, all of this is complete speculation, there is just no way to know if the leak is or is not a marketing gig; so I don't think a lot can be gained by arguing over it :)