In the first phase of the deal, the country would purchase 10.6 million slates with another 2 to 2.5 million iPads arriving shortly afterwards. The entire program would run over 4 years and cost the country $3 billion to $4 billion U.S. Dollars.
While in Turkey, there is speculation that Cook will also visit the first Apple Store in the country. Located at Istanbul's Zorlu Center, the store is inside an all-glass cube, similar to the Apple Store on New York's tony Fifth Avenue. The store offers 21,500 feet of retailing space, and gives Apple a brick and mortar presence in the country to go along with the online Apple Store it opened in October.
source: emlakkulisi.com (translated) via AppleInsider