Presumably the iPod Touch version of Safari can still read PDFs. Unfortunately, the new machine doesn't seem to support email, so one avenue that's proven useful on the iPhone for getting PDF files into the machine is not available on the new device.
I've tested the
FileMark Maker hack as another way to view offline PDFs via iPhone Safari, and it seems to work well for smaller files (less than 1 or 2 megs). See a
video demo of PDFs on the iPhone.