Galactic Civilizations IV is now officially available from the Stardock Store and the Epic Games Store, following about 10 months of Early access for the 4X space strategy sequel. There's a post about the news on the game's official website which includes a Release Trailer to mark the occasion. Here's the big picture:

Stardock released Galactic Civilizations IV today. The newest installment of the award-winning space 4X strategy sandbox game series takes the best of what its predecessors had to offer and adds new features like multi-sector maps, the ability to customize your civilization mid-game via policies, internal factions, a unique mission/quest system, and so much more.

As the all-powerful leader of a spacefaring civilization, players will seek out new star systems and discover the exciting potential of the subspace realm. With over a dozen starting civilizations to choose from – plus the ability to create unique custom civilizations from scratch - the possibilities for each playthrough are endless, leaving players with a truly unique experience every time they start up a new game.