(Update: more MBA evidence) A pair of leaks Saturday night by well-known source Chronic pointed to both features buried inside iOS 5 as well as hints that the upcoming MacBook Air refresh could happen next week. Internal, Apple-only builds of iOS 5 have settings for "Nuance Dictation" and "Nuance Long Endpoint," suggesting that the rumored Nuance voice recognition support thought to be coming at WWDC was just buried, not scrapped. The approach is still mostly mysterious but is expected to use Apple's acquisition of Siri to produce complex voice commands beyond wha