There's a lot of interesting stuff at this interview with Kurt Busiek at Newsarama, including an image (via Shane) which
will almost certainly be pulled down which has already been re-edited by DC publicity by the time you read this. (but Shane has the original. hee hee)
Second most interesting to me, of course, is Kurt Busiek's post Infinite Crisis instructions from DC Editorial:
Infinite Crisis was the moment where DC kind of threw everything up in the air and said, "Okay, guys, pull it all back together again. You can pick bits from anywhere – from the comics, the movies, the cartoons, whatever – and polish it all up and make it go."(emphasis mine)
... which is a lot like my understanding of how Hypertime works.
There's a lot there, with some really interesting stuff about the Lois/Clark relationship, the super-brain, the Silver Twist(?), and how it all relates to Superman: Secret Identity.