Features:

• Besides the on-board PCB antenna, option to use SMA connector for external antenna (soldering is required)
• Flexible REQN and RDYN pins selectable from pin 2 to 12, these pins are fixed at 8 & 9 for BLE Shield v1
• Reset button also resets the Arduino board, and vice versa
• ICSP header provides Vcc (for other shields to get power source)
• ICSP header now passes through (for other shields to connect to the SPI)
• Shield’s reset is controllable by Arduino pin 4 or 7
• Reset signal to the shield is now active low (i.e. pull low to reset the shield)
• Added test points for power consumption measurement of the nRF8001 chip (soldering is required)
• Added circuitry and test pin (J9 NC) for measurement of instant working current (using logic analyzer, 1mA = 100mV).
• Reset button is changed to “side button”
• nRF8001 SPI pins can be set to either Pins 11-13 on the side or ICSP, this allows other Arduino compatible boards with no ICSP header such as FRDM-KL05 board, RedBoard and so on to interface with the nRF8001 BLE chip
• Flexible REQN and RDYN pins selectable from pin 2 to 10
• The board is shorter than before and this allows it to fit on Arduino Yun physically

Documents:

• Arduino Example Code