Feral Interactive have announced now that Warhammer 40,000: Dawn of War III [Steam] is coming to Linux on June 8th!
You can visit the minisite here (the correct link), but their site seems to be having a few issues. The link in the tweet doesn't work and the minisite claims it's "out now".
Sadly, it seems multiplayer is only macOS and Linux, with no support with playing with Windows gamers, which means the multiplayer will again be limited. Even so, I'm still excited and will likely resume my weekly livestreams with someone from Feral like I did with Dawn of War II. Even if Feral won't do weekly games for it, I likely will arrange something to get the community going for it. If you're interested.
Dawn of War III will be available through the Feral Store and Steam for $59.99/£39.99/59,99€. It seems there will be no release-day sale for the Linux version.
David Stephen, Managing Director, Feral InteractiveWe’re delighted to bring such a hugely anticipated game to macOS and Linux. Dawn of War III’s epic single-player campaign and visceral multiplayer combine to deliver an exhilarating experience on a vast scale.
They have a trailer up now too: