According to engadget ”The last time Apple updated its iMac line we were treated to Intel Core 2010 processors. So it’s no surprise — really, no surprise at all — to see Apple refreshing the lineup today. Prices start at $1,199 (as usual) for the 21.5-inch (1,920 x 1,080 pixel IPS panel) model with new 2.5GHz quad-core Intel Core i5 processor and 512MB of AMD Radeon HD 6750M graphics. Prices soon jump to $1,999 for a 27-inch (2,560 x 1,440 IPS) model with 3.1GHz quad-core Intel Core i5 CPU and 1GB of AMD Radeon HD 6970M graphics, or optional 3.4GHz quad-core Core i7 proc and 2GB of HD 6970M graphics if you so desire”.
Source : engadget