In addition, we have recently doubled the number of languages that support transliterated input. Last year we announced that you could type transliterated Arabic, Hindi, and Persian. We have now extended that functionality to Greek, Russian and Serbian. With all of these languages you can type transliterated words in roman script and have the script converted automatically. Go ahead and check it out!
While we are on the topic of transliteration, the labs product Google Transliteration has recently added Hebrew, Oriya and Sinhalese to its supported languages. We expect to have Hebrew transliteration working in Google Translate soon as well.
Added on 4/14/10: Hindi and Spanish "text-to-speech" are now live on Google Translate as well.