I attended a demo at E3. The following is some information I don't see on the first post yet. As I know you want actual references, you can seek to confirm it in other places. The demo I saw was similar to one posted by the Escapist that you link to.
* I listed the social policies I observed as well as how I heard Utopia being explained in this post in the social policies thread:
http://forums.civfanatics.com/showpost.php?p=9294071&postcount=11
http://forums.civfanatics.com/showthread.php?p=9294326&posted=1#post9294326
* Glory of Rome (Rome's unique ability)- "25% production towards any building that already exists in the capital"
* Terrain - I saw several "oasis" tiles in a desert area
* Wonders - I saw Stonehenge, Chitzen Itza, Notre Dame and National Epic
* Resources
** Tiles - Gems (also mentioned by presenter), Wine (pretty sure)
** Based on icons in the top stats strip of the UI: Oil (oil drum - you can see it in this screenshot at the top with an 8 next to it:
http://pc.ign.com/dor/objects/62125...ation-v-20100615032306330.html?page=mediaFull), Uranium (yellow nuclear symbol). Looking at that screenshot, two are clearly iron (anvil), and horses. The final one with the 2: aluminum?
* Units
** Modern armor - 4 move, 80 strength
** SAM ___ - Looked like a 80s era vehicle with several missiles (was definitely different than the mobile artillery that was in this screenshot:
http://pc.ign.com/dor/objects/62125...ation-v-20100615032301924.html?page=mediaFull). I think it is the equivalent of the SAM Infantry from Civ 4.
** Battleship - 100 strength (can see it firing this screenshot on IGN:
http://pc.ign.com/dor/objects/62125...ation-v-20100615032310595.html?page=mediaFull -- I didn't see that other ship in my demo but I'd guess that is a destroyer)
** ICBM - Demo ended with a bang. Reduced Monty's city from size 21 to 7 and spread fallout over multiple tiles like in Civ 4.
** The Frigate seemed to have 5 movement not 7 as Bite currently has. It bombarded the city from several tiles away.
* After each attack (eg. cannon unit shoots at rifleman unit), numbers flash over both units like -7 ("damage") and +5 XP (experience gain).
* Combat modifiers - penalty for attacking across a river, defence bonus for being on a hill
* Items in UI on initial talk to leader screen:
** Declare war
** Trade
** Demand
** Discuss
** Goodbye
* Items on the UI for diplomacy (first two are missing from Bite's list):
** Gold (1000)
** Gold per turn
** Open borders
** Defensive pact
** Research agreeement
** City
** + Other player
** + Strategic resources
** + ____
* When capturing a city, there are three options now instead of two:
** Annex city
** Create puppet
** Raze the city
* City state of Geneva. Elements of the UI
** 0/30 Neutral
** Traits: Cultural
** Personality: Irrational
** Allied with: None
* The symbol for food is a green apple instead of bread this time. It is also the green dots in the city view (
http://pc.ign.com/dor/objects/62125...ation-v-20100615032252346.html?page=mediaFull).
* Very early in the game a ruin was discovered. The player would then need to send a unit to the ruin to potentially find secrets.
* There are techs that will make a city better at defending itself. There are social policies that will also improve city defense.