"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," reads message from the development team. "We just need a little more time to make it the best possible game."
The studio went on to say that the extra development time will give Firaxis the time it needs to "deliver on our promise" of making XCOM 2 a deeper, more enjoyable experience overall.
"We appreciate your patience and continued support as we move towards February," it said. "Good luck, Commander!"
The sequel "transports players 20 years into the future, where humanity lost the war against the alien threat that has established a new world order." For more, check out GameSpot's in-depth reveal report.