If you're looking for a way to turn your Bluetooth speaker into a Spotify Connect device, then this is the way.
The company has launched boards running Linux before, including the Yun and the Tian, yet it's typically competed more with ...
The HM-10 offers only edge connections, so it usually comes mounted on a breakout board that extends requisite connections to breadboard-friendly male-header pins (which is how mine came from eBay).