Director Jeff Kaplan confirms that it's not Sojourn, who was recently showcased.
Cosmetics from the first game will also carry over into the sequel.
The shooter features new maps, hero abilities and a brand new PvP mode.
Several established heroes also seem to have new looks in the sequel.
New heroes, modes and maps are also included.
The virtual ticket costs $49.99 and also includes in-game items for StarCraft 2 and Diablo 3.
In development since 2017, the project was like "Battlefield in the StarCraft universe."
The sequel will apparently be revealed at BlizzCon 2019.
