Tigole interview:about WotLK

Allvatar.com interviewed Tigole, and here is a small summary of the rather new information :

CoT : Stratholme and Naxxramas will be here to bring people back to the old continent.

Dustwallow Marsh will fill the lvl 35-45 gap in leveling.
Elite quests will be turned into normal quests in Alterac Mountains and Arathi Highlands.

Northrend will be larger than Outland. Zones will be smaller than the ones in Outland (except for Dragonblight)

There will be a "level up" instance for every level range. (Pretty much like Burning Crusade
WotLK will have at least two 10 man instance, with possibly a third one in a patch.
They don't plan to upgrade the engine to DirectX 10, they will just add a few improvements every now and then.

Randomization will be added to daily quests to make people feel like they do different quests each day.

Housing is still scheduled, but doesn't fit with the current development of WotLK. We'll have to wait quite some time before getting it.