When Apple released the iOS 5.0.1 update last month, it not only tried to fix the battery life issues and bring a couple of features to the table, but also made the Siri port legally possible for the iPhone 4.

As a direct effect, developers are already working on a project called “i4Siri,” which will hopefully bring the personal assistant to the last year’s iPhone in a legal way. There will still be a need for older devices to run iOS 5, but with a couple of Cydia tweaks and utilities, Siri will probably help you get things done on your iPhone 4 soon.

Check out the video teaser above while you’re waiting for the port to finally be released.