The official spanish Google Code's blog announced the translation to spanish, chinese, japanese, portuguese and russian is being implemented.
Interesting for those who don't handle well english.

http://programa-con-google.blogspot.com/2008/04/ms-y-ms-en-espaol.html

This is false. These languages were already available! I've seen this listbox on top screen since one or two months. Or more. Look the cache of any Google Code page in Google and you will see the listbox.
I don't know why this blog (and another one : http://google-code-updates.blogspot.com/2008/04/novo-nuevo.html) say that.