Google Translate already supports dozens of languages, some quite obscure, and is working on adding support for more. But, apparently, it's also working on adding support for dialects, to differentiate between versions of the same language used in different regions.
The Google Operating System blog
spotted some of the upcoming features in the Google Translate source code.
For example, users are going to be able to switch between American English, British English or Australian English. Multiple choices will also be available for Spanish, Portuguese or Chinese.
There are also clues for other presumably upcoming features, like a phrasebook for certain languages and a dictionary view.
The phrasebook could come in handy if you're trying to communicate in a foreign country, though the feature is even more useful on mobile devices than on the desktop site.