Battlefleet Gothic: Armada II
Battlefleet Gothic: Armada II is the sequel to Battlefleet Gothic Armada and is the first 40k game to be set during the Gathering Storm (An event in which Geedubs finally decided to advance the storyline)
The game will again be developed by Tindalos Studios and published by Focus Home Interactive, and will be released in early 2019.
Setting
As mentioned above, the game is set during the Gathering Storm event. To summarize: The armless crybaby known as Abaddon the Despoiler launched his 13th Black Crusade which ended with him rage quitting and dropping a Blackstone Fortress upon the planet of Cadia, destroying the planet (though it broke before the guard did) and it's pylons resulting in a chain reaction of warp-storms that created the Great Rift and divided the galaxy in half.
During this time, Ynnead awakened (thanks to the machinations of a certain Dick) and chose the craftworlder-turned-corsair-turned-wych Yvraine as its emissary. Yvraine saved the survivors from Cadia's destruction and travelled to the Ultramarine's homeworld of Macragge where they woke up Roboute Guilliman from his ten millenia long coma.
Plot
The game will have three campaigns at launch for the Imperium, Tyranids and Necrons.
Prologue/Tutorial
It has been confirmed that the Fall of Cadia will be the games Prologue/Tutorial. You get to command the Phalanx, so that's awesome..
Imperial Campaign
Players will again take control of Admiral Spire from the first game. Spire returns from warp travel, but due to the timey-wimy effects of the Warp, he discovers he has been transported several centuries after the Gothic War. He's now task in retaking the ruins of Cadia and safeguarding imperial worlds from the Forces of Chaos and marauding Xenos.
Necron Campaign
Players will take control of of a Necron character named "Amarkun the Gatherer", who awakens after several millennia of slumber and is ordered to reawaken the nearby tomb worlds. Amarkun will come into conflict with several factions and eventually come across Trazyn the Infinite.
Tyranid Campaign
Just eat the whole galaxy.
Gameplay
Factions and Tactics
So far, the developers have confirmed all the factions from the original are making a comeback, but also tyranid hive fleets, necron fleets, dark eldar, mechanicum forge fleets and others are coming too.