One of the most popular dual SIM options right now is the 2nd gen Moto G, which is only available with a second SIM slot in certain markets. People in those parts of the world have reason to be excited today as the first official CyanogenMod nightly for this device is now available.
This phone is code named Thea, and it's mostly sold in India and Brazil. That's a lot of potential owners who can now install CyanogenMod, if they so choose. This is a nightly, meaning bugs are to be expected. A new build will be posted daily, and should eventually result in a stable milestone build. Proceed with caution.