My predictions aren't original, but my guess is:
- the device won't just be a bigger iPod or iPhone. It will target a new segment, probably the Kindle (ebook reader)
- the device will offer some new content package. e.g. Maybe the NY Times will be free
However, beyond technical savvy, he is a shrewd businessman. He was the one that took online music out of the courts (hello Napster) and into a bona fide business model. This was huge! Also, he wrangled AT&T into a deal to support the iPhone (though certainly AT&T has profited tremendously from that). Gates is a titan as well, but Jobs is the King of combining polished devices and outstanding content into a package that creates a rabid cult following.
With the tablet on the way, call him Moses of The Deal.