On the Fires of Heaven forum there is some news about the quests for WoW. Tigole an employee of Blizzard, who is part of the team that is working on the quests for WoW shared some new information concerning them. Below is a direct quote by him.
We wanted the challenge in the quests in World of Warcraft to be the actual steps of the quest rather than figuring out who to go to and what they want. Our philosophy is that cryptic quests where you cannot figure out who to speak with or what exactly they are looking for is rarely fun. It might be fun for the first guy to figure everything out and post it to a spoiler site, but then after that it is simply annoying. We want people to have fun playing the game -- not to feel obligated to crawl spoiler sites.
The quests in World of Warcraft can be repeatable or non-repeatable, as well as limited by level/class/reputation/race/alliance. This gives us a tremendous amount of flexibility. Because quests can be non-repeatable this allows us to give very high experience rewards. The way the game currently plays, you are most effective if you are constantly questing. This keeps everyone moving around the world. You don't simply find a camp with a decent respawn and *grind* -- you'd be less effective if you did that.
Certain quest items will drop for everyone in the group if they are on the quest (and only if they are on the quest). This encourages grouping. Rather than arguing with someone over a named spawn, it's to your advantage to invite them into your group so you can both finish the quest easier.
The level limitations on quests also allow us to point you in the direction of level appropriate hunting grounds while telling the story of WoW.
As for the types of things you'll do on quests, they range from everything from messenger deliveries, collections, bounties, escorts, defend-the-objective-missions, to numerous other event-driven objectives. We've tried to tie as many game systems as possible into the quest system to make it as robust as possible.
The link to the thread can be found here.
