Bluetooth Low Energy (BLE) Platforms
This is not an Arduino, although it sure looks like one ! This is a feature-loaded, turbocharged ESP32 Wifi/Bluetooth Low Energy SoC development board for IoT applications.
SparkFun Simblee BLE Breakout - RFD77101 provides your embedded project with a mobile app functionality.
Blend - BLE+Arduino is a combination of Arduino as well as BLE
Blend Micro - an Arduino Development Board with BLE is a small version that offers a combination of Arduino as well as BLE