Hope this hasn't been typed yet, apologies if so.
Anyhow got some info on Northrend's zones from Games for Windows Magazine.
For the moment, Northrend is split into 10 zones (boundaries and level ranges are subject to change). Enter through Howling Fjord or Borean Tundra in the eastern bay or on the western point, and fight your way to Icecrown Glacier, where Arthas' Frozen Throne awatis.
Wrath of the Lich King also introduces a couple new zone concepts: Lake Wintergrasp is WoW's first outdoor PvP zone, and Azjol-Nerub, home of the spiderlike Nerubian race, is the first "outdoor underground" zone-a cave under the heart of Northrend, vast enough to house massive structures and cities. The full(but tentative) list:
Howling Fjord (lvl 68-72)
Borean Tundra(lvl 68-72)
The Dragonblight(level 71-75)
Grizzly hills(level 74-76)
Sholazar Basin(lvl 75-78)
The Storm Peaks(lvl 77-80)
Icecrown Glacier(level 77-80)
Lake Wintergrasp (Outdoor PvP)
On upgrades and level curves:
Edited, Sep 30th 2007 3:34am by Zornov
Tom Chilton wrote:
"The guiding principle is that it should never feel like you're grinding. You should never run out of quest content. We don't expect to be drastically different from what 60 to 70 was like." And despite complaints from the early days of Burning Crusade, even the most epically geared players should be getting new gear from almost at the start. "The hardcore resent that at first, but it's only a matter of time before they start getting into the endgame again."