I know they prefer people to edit if they've got the last post in the thread, but that doesn't bump the topic, so here's another post.
Futher facts from the new interview I mentioned are below. I tried to only mention things that I thought were new, or at least added to what we already know, but I could have easily missed some info somewhere that makes some or all of this old news. Apologies in advance if that's the case

* Your Journal has a tab that shows your current quests. If you click on a specific quest, it shows you all the information you have discovered in that quest in chronological order
* If a quest requires you to (say) talk to "any begger", your compass quest indicator will highlight all beggars in your vicinity, with colour indicating distance.
* There are 40-50 different kinds of creatures (as an example of a "kind of creature", he said that goblins are one kind of creature, although there a many types of goblins)
* You have a tab that tracks your bounty, fame, infamy, number of stolen items, number of days in jail, (if you're a vampire) how many people you've bitten, and other things.
* You can buy a house in every city, and buy stuff to decorate your house with.
* If you attack an unarmed NPC, they might run off to a shop to buy a weapon to fight you with.
* Materials for armour and weapons include: glass, mithril(?!?), iron, steel, "etc"
* You can create poisons with alchemy, and then put it on your weapons
* At the very start of the game, you choose your race and create your face. Then you start in the familiar prison cell, meet the emperor, and play for ~40 minutes before choosing your major skills ("class"). When you leave the character creation dungeon, you get one last chance to change everything, including the race and face you initially chose.
* Player character vampires in Oblivion can conceil their vampiric condition (unlike in Morrowind)
* Your bounty, fame and infamy are global, the same for everyone in the world.
* They've tried to make it that you can get through the whole game in-character, so you don't have to (e.g.) resort to using a sword if you're a stealth or magic-based character.
* As well as skills ranging up to 100%, there are broad categories of skills: novice, apprentice, journeyman, master, expert. You get another perk for each skill each time it gets to the next category.
* Specific Perks described:
Blade: disarm, knock back, knock down, neck strike (paralyses them briefly)
Armourer: can repair armour beyond 100% (strengthening it)
Mercantile: invest money in existing stores, get NPCs who would otherwise not barter with you to do so
* The economy doesn't generally change under Radiant AI control, because "players don't like things changing when they're not looking". So, you can't change the prices of things by killing off NPCs who would otherwise sell things to the shopkeepers, for instance.
* Big battles throughout the game would typically have at most 6-8 allies and enemies total on the screen at once, although more might be fighting off-screen
* They are (well,
were during X05) still planning for Oblivion to be a day-one launch title for XBox360
* They're aiming for a framerate of around 30 fps on the XBox and high-end PCs.
* Horse armour and Arena- or Daggerfall- style holidays ("Jester day": all fines for crimes are halved for the day) are not going to come with the game, but instead be add-ons available for download from XBox Live (for money, I think). No mention of whether such mods will also be available for PC players or not.