Well, this might not be a great disappointment since iOS 6 is still in beta version and is expected to release in September along with the next iPhone.
According to MuscleNerd, it will be a while though before we see an official untethered jailbreak, but for now it is interesting to know they are working on it.
Here’s ioreg of my tethered-JB ipt4g 6.0: is.gd/1qOwvW .. MANY things including Cydia are broken, don’t expect beta JB for a while!
— MuscleNerd (@MuscleNerd) June 12, 2012.