The current jailbreak that is brewing is called Greenpoisi0n it is being developed by the chronic dev team. An older version of Greenpois0n was already formerly used to jailbreak iOS 3.2, there has been no scheduled release date yet.
There will be a release date once Greenpoisi0n is in a final stage.
Be aware of fake Greenposi0n websites.
Greenpoisi0n’s official website is: http://greenpois0n.com/