Guess several unusual entries in Best Buy’s inventory system have been heralded as future placeholders for Apple’s next generation of iPhones, although it remains to be confirmed by the fruity company. The screenshot you see here shows the inventory system displaying an unidentified trio of AT&T devices that have been listed under the name of “Project Charlie.” There are just around three more weeks to go before the next WWDC rolls around, so we’re keeping our fingers crossed as to whether this is one of Apple’s best kept secrets, or will a leak between now and then all but confirm the existence and release of an iPhone refresh.