Blizzard announced official system requirements for Wrath of the Lich King:

Mac OS X 10.4.11 or later, G5/1.6GHz or faster Mac with 1GB RAM, and ATI Radeon 9600 or Nvidia GeForce Ti 4600 or better 3D graphics with at least 64MB VRAM. As we already know Wrath of the Lich King is the second official expansion set for World of Warcraft.

Wrath of the Lich King will released both in a standard version for $39.99 and a Collector’s Edition, bundled with additional ..read the full article