Well, looks like iPhone OS 3.2 is next on the block, and the OS shipping on the iPad I'd hazard to guess. http://www.engadget.com/2010/03/29/iphone-sdk-3-2-goes-gold-seeded-to-paying-dev-program-members/ We'll see what happens...
True. The hardware could interfere with the jailbreak. Just think of it like this: You want the least amount of variables. Hardware difference is a variable, even if it is emulating the software. He will probably wait until he can get an iPad, just to be sure. But that could still be April 3rd (if he pre-ordered/ reserved one).
exsactly thesew morons try and push em to try theres on touch with ipad firmware but theres a hardware difference is the issue so its a waste of a hack