My eagerness to get my hands on this thing was bad enough before -- now it's to the hilt!!!!! Why isn't it Saturday yet???!!! 
As for the printing options with the iPad I have the feeling that someone will have to come up with an app, and that otherwise one would send one's document to iWork.com and then either be able to print there or download from there (or import/export) to one's own machine and print from one's computer. This is what I'm guessing from watching the video, as there was indeed NO mention of printing at all, just the iWork.com site and other possible ways of sharing one's document.
As for the printing options with the iPad I have the feeling that someone will have to come up with an app, and that otherwise one would send one's document to iWork.com and then either be able to print there or download from there (or import/export) to one's own machine and print from one's computer. This is what I'm guessing from watching the video, as there was indeed NO mention of printing at all, just the iWork.com site and other possible ways of sharing one's document.