It's a configurable option. If you scroll down on that Apple.com page, you'll see this on the 13" and similar on the 11": "DKK12,099.00 model configurable to dual-core 2.0GHz Intel Core i7 (Turbo Boost up to 3.2GHz) with 4MB shared L3 cache."
EDIT: Apparently the OP figured it out by himself...