First of all I'd like to thank the guys at CA, Sega, and TWC and other forums who were there, they were all very nice and it was a great event! Here's some info that was confirmed/explained further:
1. Flaming pigs are confirmed!
2. Armies on the campaign map can be set to certain stances. For example, an army set to forced march will be able to go further, but the various drawbacks include a vulnerability to ambush. Other stances include the ambush stance, and there was another that I can't recall.
3. Someone asked about city-view, and they said that if there was enough demand they would put it in. Mike Simpson mentioned that he personally wouldn't use such a mode, but if enough of the player base wanted it then it was doable.
4. I asked about sea-regions. They explained that yes, the sea will be divided into several regions, and that a navy in a particular region will have dominance over that region. However, it was mentioned that a zone of control effect would still be in play in some ways, such as raiding trade routes. Like armies, navies can be placed in certain stances (raid, patrol/defend, etc). I think this will make more sense as we get more previews and some campaign map footage.
5. They reiterated the previous info about line-of-sight and scouting. Craig made a point to say that heavy infantry are bad for scouting, not that he was speaking from experience or anything.
6. The end game depends on how you have decided to play throughout the campaign. If you are wary and appease contending families/nobility/etc within your faction, your end game will be different than if you choose to defy all of them. For Rome, you could choose to either defend the Republic and the Senate, or challenge the other families and the Senate yourself. It was also noted that other factions would have similar, yet unique iterations of this idea.
7. The four seasons will be in the game, even though it is one turn per year. How exactly this will be implemented is still up for debate. Battlefields will 100% have different seasons. I think this will be elaborated on later.
8. It seems as though there will be a blood pack similar to Shogun 2, due to the ratings issues, but I don't believe anything was confirmed yet.
9. I asked about Armenia and Pontus as possible dlc candidates, and mentioned that "The Poison King" DLC pack would be a catchy title. Unfortunately there is not answer to this just yet. I also asked if Armenian legionnaires would be making a reappearance, but this was not confirmed either.
10. The CPU/GPU usage will be more efficient to a degree on the low end, but on the high end things will be pretty similar to Shogun 2 in terms of CPU/GPU usage. I'm not that much of a technically minded guy so perhaps someone else can explain that better than I can.
11. You will be able to see your cities grow more progressively on the campaign map. As you build individual buildings, you will be able to see them appear on the campaign map.
12. The map for the Battle of Teutoburg Forest will be available on the campaign map if you are fighting a battle on that particular tile.
13. The game looks GREAT! I'm sure animations will be made more smooth as we get closer to the release date. It was great to see the Roman soldiers raising their shields to block arrows.
14. The Eastern edge of the map MAY extend farther than Bactria. Perhaps I misunderstood but they said that the Eastern edge of the map has not been revealed yet.
Well that's all for now I think.