Last week we brought you news of the release of the long-awaited jailbreak for the iPhone 4S and iPad 2. Now it looks like jailbreak developers have wasted no time in preparing some amazing tweaks for the iPhone 4S’s most notable feature: Siri. A tweak has appeared in the Cydia app store that turns Siri into a translator.

Lingual is a free tweak that allows users to say an English phrase to Siri and have it translated into whatever language they choose. At present Lingual supports more than 30 languages, including French, German, Spanish, Dutch, Italian, Russian, Vietnamese, Ukranian, Estonian, and more. Lingual requires that the AssistantExtension tweak already be installed.

While Lingual isn’t quite a Star Trek-style universal translator, it’s a step in that direction. Here’s a video of Lingual in action, courtesy of iJailbreak. Check it out and let us know what you think in the comments.