A BT4.1 module maker based on Nordic nRF51 solution (nRF51822 & nRF51422)
With coming more and more popular beacon service, google also released Uribeacon.
Raytac's partner uCXpresso has successfully conduct the UriBeacon Implementation based on Nordic nRF51822 solution.
What is UriBeacon
uCxpresso Uribeacon implmentation (LilyPad-nano51822)