An internal memo to Sprint staff has provided a virtual giveaway of the carrier's plans to carry the iPhone 5. The note issues a blackout on employee vacations between September 30 and October 15 for a "major phone launch." While a small chance exists that the SprintFeed leak is a reference to something else, the corroboration of rumors and silences on both the name and release date make the iPhone 5 the near-certain subject of the memo.