Language

The choice of languages is a feature that was introduced in weekly snapshot 11w49a and will be added in Minecraft 1.1.0. The language menu is accessible via a new button in the main menu to the left of the options button, and from the options menu.

History
Here is a table that summarizes the modifications of languages through the updates :

Available languages
As of weekly snapshot 12w01a, there are 50 languages, which are, in alphabetical order :

Upcoming languages
This is a list of all the upcoming languages that are listed on the official Minecraft translation project page :


 * English (Australian)
 * Hindi
 * Irish
 * Quenya
 * Spanish (Mexican & Uruguayan)
 * Vietnamese

Bugs

 * Currently there is a bug with the Arabic and Hebrew translations that makes all the letters appear in the reverse order, probably due to these languages being right-to-left languages.

Inaccuracy

 * It says "Англійська (Україна)", but it has to be "Українська (Україна)", because the first one means "English (Ukraine)". Same applies to Basque, Greek, Icelandic and Romanian.
 * Bulgarian is doubled, an both are wrong — as български (means Bulgarian, but written from the small letter instead of the capital one) and as Английски (written from the capital letter, but means English)

Trivia

 * Minecraft is available in Klingon (Klingon language from Star Trek) and will soon be available in Quenya (Elvish language from Lord of the Rings).

语言