It's been in test for quite a while, and we're happy to say that SuperDuper! v2.6.2 has been released!
I understated the speed improvements we've measured in the press release and collateral, but we really are seeing 3x improvements in-house, which is pretty great. We'll see how it works for you.
Anyway: I hope you enjoy the new version as much as we enjoy being able to provide it to you.