1) What will the file system consist of? And yes, there will be one of *some* kind. How do we know? iWork. I’m pretty sure Apple wouldn’t develop and release native iPad versions of iWork applications if you couldn’t, you know, save the files you create and access them another time.
Maybe it’ll be web based ala Google docs? Maybe it’ll be a slightly enhanced version of iDisk? That’d work fine for me. My gut is that a proper file system will be part of OS 4.0 and the introduction of multi-tasking. There may be no logical computing reason for them to require or relate to one another (though please feel free to point out if so!)
2) How will we print? Like a file system, there must be a solution. Again, iWorks is the easy example to cite. Gotta print those Pages right?
Bonjour? Bluetooth? Either/both? We’ll see of course but my bet is Bonjour networking for starters.
I’m sure I’ll think of other large questions which loom ahead of the actual launch. For now this is enough to ponder!