Kazakh is a Turkic language spoken in Kazakhstan and a few other areas. While both the Arabic and Latin scripts have been used to write it in the past, Cyrillic is now the standard. The alphabet is essentially the same as Russian but with 9 additional characters: Ә, Ғ, Қ, Ң, Ө, Ұ, Ү, Һ, І.
OS X comes with fonts that cover Kazakh, but with no keyboard layout. On my iDisk you can find two versions: KazakhCYR, which is the same as used on Windows machines, and KazakhPH, which is modeled on the Apple Russian-Phonetic layout and may be easier for people used to QWERTY.
Switching from Cyrillic back to Latin (which was used for a number of years before 1940) is reportedly under consideration by Kazakhstan.