Bluetooth 4.0, introduced in the latest models of MacBook Air, Mac mini and the iPhone 4S among other devices, is getting a re-branding courtesy of the working group that controls the technology. The 4.0 spec will now be referred to as "Bluetooth Smart Ready" for devices that use a dual-mode radio that can handle both the new spec and the "classic" Bluetooth abilities, while the tag "Bluetooth Smart" will refer to dramatically lower-power devices that use a single mode 4.0 radio only.
