Update 1.5.5 just dropped today:
https://steamcommunity.com/games/867210/announcements/detail/530966980715349726The big highlight is simultaneous turns for multiplayer, as apparently that's been a long-requested feature by the community since Early Access. Two other notable changes are a rework to the Hero skill system, plus improved/more balanced random maps (though for those who prefer them, a "legacy mode" for the old-style random maps will be added in the near future).
And of course, the game is part of the Steam Spring Sale: It's a hefty 72% off, just $9.79 USD.