i tried to put as many as i can
here is the link
Ukranian is listed there, but there is already an Ukranian course on Duolingo :)
There are so many that I would like to see!
Macedonian, Slovene, Belarusian, Rusyn, Armenian, Ainu, Georgian, Sami, Kazakh, Inuktitut, Greenlandic... :D
Icelandic, Japanese for Web, Chinese and Arabic are what I'm waiting on :)
Definitely Kazakh for English speakers