well it looks like the <possiblyrenamed>Phone from Apple might hit some snags. first there is the lawsuite filed by cisco (good commentary from cisco general counsel here) about the trademark violation, and then the news is starting to trickle out.
first, the "OS X" maybe isn't so OS X as promised. according to a VP Q&A session it is similar to how iPod uses OS X...a psuedo subset with no open APIs. this likely may mean that no user-installable applications will be allowed...snag for Apple in my opinion.
the screen also uses the same polycarb as the ipod -- and remember the reports of screen scratching and durability? hmmm...wonder if this will have similar issues given the surface area. wifi syncing -- nope. what?! well according to apple, nope. blah.