Hi RLH,
Well, you can't use BLE the same way you use classic bluetooth. That means BLE devices will not show up under available devices in settings.
Try with an app like LightBlue or BLE Utility on your iPhone. Also, you need to make sure that you have a device that supports BLE... such as iPhone 4S or up, iPad mini etc.
I just got the tinyduino starter kit. I also got the rev 2 Bluetooth LE. I downloaded the code from the tutorial that is supposed to make it discoverable into the processor using the usb shield . I remove the usb shield and am using just the processor board and the Bluetooth LE. I have a fresh CR1632 in the coinholder. The problem is, my PC (which is running windows 8.1) is not seeing the device. My iPhone is not seeing the device either. I also have an Arduino uno with another Bluetooth board ( not LE) and it is being seen by my PC. I've been beating my brains out on this , please Help!