As of yesterday, an NDA seems to have been lifted, as we suddenly got a ton of new preview videos from media sites. I don't like to link to other forums, but since I'm probably going to be too lazy to keep this updated this way, and the one who made the thread over there isn't, I might as well.

General Preview Thread

The first post is the important bit, and here it is, in it's glorious detail.

(SPOILER)
Quote Originally Posted by SayuriUliana View Post
Reworking this thread as a compendium for all released XCOM: Enemy Unknown preview articles and videos.

Here's the comprehensive list of all previews compiled by gair22 (links reformatted):

Video Previews:

Videogamer.com - Escort Mission Gameplay [09/14]
Videogamer.com - Abduction Mission Gameplay [09/14]

Games.De - Second Preview Video to Tactical Parts (GERMAN) [09/14]

Gametrailers.com - First Contact Preview [09/14]

Official XBOX Magazine (Part 1) [09-13]
Official XBOX Magazine (Part 2) [09-13]
Official XBOX Magazine (Part 3) [09-13]

Joystiq.com - Sending Rookies to Die [09-13]
Joystiq.com - From X-Com to XCOM [09-13]

Revision3.com - The First 3 Hours [09-13]

Videogamer.com - An Old Flame [09-13]

Destructoid.com (Youtube Post) [09-13]

Pcgames.De (German) - Erstes Preview-Video zum Strategieteil [09-13]

3djuegos.com (Spanish) [09-13] - FYI Adblocker gives access denied to the video

Articles & Screenshots:

RPS XCOM XChat: Jim And Adam In Turn-Based Conversation [09-14]

OXM XCOM hands-on: Xbox 360's best strategy game is also the scariest [09/14]

Electronictheatre.co.uk - Article Preview [09/14]

Lazygamer.net Article - Quick, before ze aliens get here! [09/14]

Examiner.com - Article [09/13]

2kGreg Ps3 Screens! [09-13]

Rockpapershotgun.com - Hands-On: Forty Hours With XCOM [09-13]

Officialplaystationmagazine.co.uk - Galaxy-saving choices that make Mass Effect seem a cakewalk [09-13]

Dealspwn.com - Interview with Garth Deangelis [09-13]

Gamereactor.eu - Article Preview
Gamereactor.no - Article Preview (Norweigan, not the same as above) [09-13]

Do Gaming (gaming.do.co.za) Preview [09-13]

Jatekok.hu (Hungarian) Article Preview [09-13]

Multiplayer.it (Italian) Preview [09-13]

PAX 2012: XCOM: Enemy Unknown hands-on preview [9-13]

Electronic Theatre Preview: XCOM: Enemy Unknown [9-13]

PAX Livestream Videos:

PAX - A Thousand Stupid Ideas on the Road to Glory - [09-01]

PAX - 2k Games FULL Live Coverage From PAX Part 1 - [08-31]
PAX - 2k Games FULL Live Coverage From PAX Part 2 - [09-01]
PAX - 2k Games FULL Live Coverage From PAX Part 3 - [09-02]


Like I said, the one on the 2k forums is constantly updated with new info, while ours will not be (because I'm lazy).


However, I would like to draw attention to something I noticed in one of the vids.

Pigeons

There you are, troops kitted out and ready to rescue a VIP, and in front of you, on the open concrete, is a flock of frelling pigeons. Milling around, pecking at the ground, cooing like Tribbles.

Some of them don't care about your troops much, and just slowly waddle away. Others get spooked when you get too close and fly off, prompting others to fly off.

I mean, how awesome is that? So much detail has been poured into this game, not just the combat, or the strategy, but in making the world seem alive. Someone went and crafted a pigeon AI and added in pigeon sound effects. It's little touches like that which show just how much these developers care about quality and detail.