Arduino enthusiasts searching for a board that supports connection via Bluetooth rather than USB may be interested in the Z-duino Bluetooth Arduino board recently launched via Kickstarter.

The Arduino 101* Bluetooth® LE is based on the Generic Attribute Profile (GATT) architecture. GATT defines a hierarchical data structure that is exposed to connected Bluetooth® LE devices.

In Connecting to Intel® Edison from Android* with Bluetooth* LE (BLE) describes a way to access BT via Arduino code but additional BT shield/kit is required.