As a quick note, I was looking for trilingual (English, Russian, Kazakh) fonts today. There are many great font websites where you can download lovely typefaces for English, and sometimes Russian, but it’s much harder to locate the specialized characters needed to display Kazakh. (There’s an official website with Kazakh fonts here, but download doesn’t seem to be working.)
At any rate, below is a PDF displaying typefaces that look decent across all three languages. I do hope if the country takes the trouble to switch to latin letters, that they’ll be able to only use letters found in a major language (e.g. Turkish)– any special characters would make use of international font sets as difficult as ever!
Best Kazakh Fonts