Company of Heroes 2 is a World War II set real-time strategy game developed by Relic Entertainment and sequel to the original Company of Heroes game. The Company of Heroes 2 title is powered by the Essence 3.0 Game Engine, which is proprietary to Relic Entertainment, uses a DirectX renderer, and designed around Windows. Company of Heroes 2 was released last summer for Microsoft Windows and is available on Steam.
Last year when a Linux port of the game was asked about a developer responded, "A Mac version is more likely than Linux. Producing a game is a very expensive thing to do, even porting it isn't easy or cheap. We need to aim for where we know there's an audience and so far there just hasn't been enough sales on Linux for comparable games for us to make that financial risk."
Those that have resorted to trying out Company of Heroes 2 on Wine have been disappointed with a "GARBAGE" rating on WineHQ.org, but there might be some good news today. Steam changes today to the game (logged at SteamDB.info) indicate many references to Linux and Mac OS X. There's also a new coh2.sh file.
There hasn't been any official announcement yet or the game being playable to Steam Linux gamers, but hopefully we'll hear more from Relic soon about a Linux release of Company of Heroes 2.