Microsoft launch a new kind of updates called Feature Pack that improve wireless support in Windows Vista:
•Bluetooth version 2.1 support
•Unified Pairing user interface
•Windows Connect Now updates
Some of these features may work with existing hardware. However, you must have new hardware to take advantage of the new functionality.
This update is compatible with all versions of Windows Vista. It can be installed only on a computer that is running Windows Vista Service Pack 1 (SP1).