Frozen Synapse was one of my favorite tactical games when it released back in 2011, I even reviewed it. Today, Mode7Games has announced a sequel, Frozen Synapse 2.
Frozen Synapse 2 will be an open-world tactical game as opposed to the level-driven design of the first game. The details are scant, but it will release this year.
You can sign-up for the mailing list and receive a free track for the game now. Also, follow them on social media to learn more as info becomes available: http://www.frozensynapse2.com/