afaik the wiki has a list with details on language support...
but, as you see, you don't know it exists, i did not think about having a look in it, and mondaini could not bother looking for it... (or could not find it)
probably, it's more useful if people try it out and ask questions...
and, possibly, write a report about their experience : - )
since we have this topic open, i would be interested to know how good is the support for chinese and japanese in 1.5.x ... is there anybody in here who knows about it?
(i've been reading for years about people trying to layout chinese and japanese text and i think that it basically works... at least if you write from left to right...)