Finally got back from conference and I got to try out the game. (And Judgment.) Sadly, both were just demos (We usually get the full version.) but overall, the whole experience was fun and IGA is incredibly nice.
I'll try to tell you everything I know:
Music:
The music couldn't be recorded for samples because there was way too much noise, but I'll admit, it does sound pretty damn good. I really like the music that plays during conversations and in Ecclesia as a whole. During the trailer they showed us, they played a faster version of the OoE theme. (The music that plays during the intro of the game.)
Graphics:
It actually does look beautiful, more so when you see it in person. The backgrounds did repeat in a few rooms, if this concerns you though.
Difficulty:
The boss was easy: it only had three attacks in all that it did during my fight with it (The rolling across the room, green goo web spit throw of WTF, and the claw swiping at you.)It may increase in the final version though, just like the first boss in PoR did. However I understand why it looks like people were having a hard time with it during the videos in normal rooms: those damn monsters come in droves. You practically HAVE to use both Glyph buttons in certain areas just to get some breathing room.
Enemies: Since I didn't get to go to any new areas, it's like what you saw: some repeated and some weren't. I'm not sure if I missed this in current games (if I did, my bad) but the skeletons jump at you and throw bones like they used to in the older games now. (It was a pain in the ass when they were coming from both sides, along with floating Mr. Heds coming at you from the ceiling and zombies popping up from the ground.) The banshees are the new skeletons: they can be killed in 1 or 2 hits. But the skeletons are actually stronger now (It takes around 4 if I remember correctly) and so are the skeleton knights. There was another new enemy I encountered but I can't remember what the heck it was.
Storyline Spoilers:
I think someone already posted the part with Barlowe and Shanoa but other than that nothing new.
Strategy Guide:
Brady Games will be handling the guide for this game.
Here's the information from the KSS (I can't rip it because it's on a disc and is secured. (Or locked, meaning it can't be copied/pasted/printed.):
The picture on it is the same as the US cover (and the autograph I have pictured at the bottom) and here's the infofmation:
(For those that remember my DXC sheet last year, it looks the same.)
Castlevania: Order of EcclesiaRelease Date: October 2008
Genre: ActionRated Teen For:Alcohol Reference
Mild Violence
Mild Blood
CASTLEVANIA BRINGS ORDER TO THE WORLD AGAIN!
Following the success of Dawn of Sorrow and Portrait of Ruin, the legendary Castlevania series is back on the Nintendo DS. (TM) This time you play as a memeber of the Ecclesia, an organization that has sworn to defeat the evil forces of Dracula. Use the brand new Glyph attack system which has more than 100 different combinations to battle Dracula and his minions throughout 20 explorable areas. (Note: The Konami rep said 28 at the conference but he also said Judgment would have 22 playable characters so he might have been wrong.) Take part in side quests and collect items to power up your character in the next great Castlevania game produced by Koji Igarashi.
Unique Selling Points-3rd Castlevania game for the DS follows in the footsteps of the successful Dawn of Sorrow and Portrait of Ruin titles
-Popular action game play emphasizes element collection, multiple attacks, and quests
-New stages take the player outside the castle using a World Map for the first time; explore and fight in oceans and mountains
-Strengthened network features and connectivity to upcoming Wii version of Castlevania (And vise versa.)
Product Features-Castlevania: OoE features intense side-scrolling action game play as you quest to collect elements that will help you in your fight against Dracula
-Explore all-new outdoor areas from forest to oceans
-Compete head to head via the Nintendo DS Wi-Fi Connection
-Sell & buy items and equipment you have found while playing with other plays utilizing Nintendo DS Wi-Fi Connection
-Utilize multiple abilities and attacks simultaneously with the all new Glyph attack system
-Replay more than once and discover multiple endings
-Connect to the upcoming Wii version of Castlevania Judgment for special unlockable items
Here's some pics from conference:

Subject to change of course, but that's what the OoE icon will look like on the main DS Menu.

Menu Screen. A lot of sections listed on the said weren't available in the demo and couldn't be opened.

Equipment screen

Glyph screen

Just the title screen.

The Castlevania side of the Konami booth.

OoE controls

Controls up close left side

Controls up close right side

The picture IGA signed for people. (I like seeing Albus face in the picture up close since I already loved this particular picture anyway.)

IGA chatting with another Konami rep/translator.

IGA, a Konami rep and the translator were nice enough to pose for a picture for me after the conference ended and a nice little conversation.