They think (DevTeam) that 4.1 has a hole to hack and jailbreak. As Holoshed said, if they jailbreak 3.2.2, Apple will fix the hole to jailbreak and the new firmware will come fixed, probably, without chances of jailbreaking...The thing is, everyone is waiting.
I have a feeling that even if they know a jailbreak for 3.2.2 they wont release it because it lets apple fix the "bug" before they release a newer iOS.
Why should they let apple fix a bug that they want to be workable for 4.1 (etc)