Info (XCOM2)

This page is to start collect all the information related to Firaxis' upcoming XCOM 2 game, released through official channels and confirmed sources.

Storyline

According to the Overview available at the official XCOM 2 website:

The new game takes place 20 years after Earth's surrender to the aliens during the invasion.
The alien overlords have built megacities where war, poverty, crime and disease are supposedly eradicated, but which only serve as a cover for more sinister plans for humankind.
XCOM was beaten and defeated but they have waging a guerrilla style war against the aliens.
XCOM HQ is now a captured Alien Supply Ship that has been converted as a mobile command center.
New alien races, including Snakemen and Sectoid hybrids.

Procedural generated maps.
Wide mod support: you can create maps, new races, storylines and campaigns and share them via Steam Workshop.

5 classes - Ranger, Sharpshooter, Grenadier, Specialist (those are evolved versions of the original 4 classes), 5th still unrevealed
Ranger - carries sword, can engage on melee combat
Sharpshooter - can specialize also in Pistol skills
Specialist - carries a 'Gremlin' drone
Soldiers appear to have 'Character Skills' (check Tactical picture)

XCOM now always has the first shot (aliens don't scatter for cover when activated) due to more emphasis on stealth
Loot system - timers to recover items carried by dead aliens or even your own soldiers (similar to Meld on EW)
Procedure generated maps
Secondary mission objectives

Viper - similar to the original game's Snakemen (on this case being a snakewoman). Can shoot poison, wrap around a soldier and squeeze it to death, and a 'frog tongue' capable of pulling soldiers out of cover.
Sectoid - bigger and meaner than in EU, have incorporated human DNA, now have mouths and teeth, can mind control
Advent - human soldiers