You can get it one of two ways:
Use the Connect IQ SDK Manager in Eclipse, by clicking the Connect IQ menu, selecting Open SDK Manager, and then clicking the Download button for Connect IQ SDK v1.2.11 released July 13, 2016.
Download directly from our developer site at http://developer.garmin.com/connect-iq/sdk/
General Changes:
- Add support for Edge 820 and Edge 820 Touring
- Update D2 Bravo minimum firmware version
Known Issues:
- If an Exception is thrown from a catch block, the finally block of the current try/catch/finally will not be executed.
- System.getDeviceSettings().getMonkeyVersion() will report 1.2.10 instead of 1.2.11.