Yes, I heard from Phil at Osprey Publishing last week. HorizonWars has been approved for publication in April 2016, aiming to launch at Salute, in London. This is really exciting, of course.
Meanwhile, I've finished the first draft of the Iron Core alpha rules and am ploughing through the proof-read as fast as I can.
In other game design news, I'm looking at re-skinning Skrapyard to a historical skirmish game set on the Scottish borders at the end of the Tudor period. And that Rome-themed card game is coming along nicely. More details once I'm convinced that the mechanics will work.