Firaxis Games began teasing a project known only as “Advent,” later revealed to be XCOM 2, this past May. A month later, Firaxis released the sequel’s first trailer and announced a November release date. That quick turnaround appears to be too quick as the developer has now announced (via the game’s official website) that XCOM 2 will now be available on February 5, 2016:
We want to give you an update on the release date for XCOM 2. We’ve set a high bar for the sequel and the entire team has been working hard to make sure we deliver a great follow-up to Enemy Unknown. We just need a little more time to make it the best possible game.
With XCOM 2, we want to have more depth, more replayability, and more investment in your soldiers and this extension will give us the time we need to deliver on our promise to you.
After announcing XCOM 2, Firaxis told IGN they want the game to push the limits of the PC platform and that their goals are “ambitious.” This commitment to quality is great to hear, but its also likely the cause of the delay.