So far, we have only seen one working port of Siri on the iPhone 4. It was made by chpwn and stroughtonsmith and they said they wouldn’t release it until a public jailbreak for the iPhone 4S is available.
Two days ago, we first heard of a new website called siriport.com. The domain was registered on the first of November. A DNS lookup only shows that the domain registrar is godaddy.com, but not who registered it.
Currently, it is a very simple website. All they have right now is: “Siri plus Cydia equals question mark”. At this point, we don’t know what this website is going to be. Will there be another port of Siri? Or is the website just another blog about Siri related news? We will have to wait to find out.