When people are talking about Sunday - funday, if you're referring to i0n1c then he was just getting back home Sunday and was going to start working on the JB again. He has been in the U.S. for the last several days. So I'd be surprised if it did come out today.
And to be clear, what @i0n1c is going to be doing when he gets back is updating the untether for 4.3.2. Nothing to do with the iPad2 initially I'm afraid...