Speculation
Hello,
The problem with an all in one electronic (phone/pda/MP3 player) is that it is hard to use that for anything while you are talking on the phone.
How do you take notes, add an apt to your calendar, etc, when you are talking on your phone/pda/mp3 player?
I think there will be a need for 2 devices, that should talk to each other (such as a phone & iPod) via bluetooth (or 802.11g, 802.11e, etc) so that information can be quickly shared or accessed.
Now, what does a PDA do? It holds contact information, appointments, notes, and some of the newer ones, graphics and music.
What does the iPod not do of the above list? You can not view graphics, but it can hold graphics (or anything else for that matter, it is a firewire harddrive).
So, the logical update to an iPod would be larger, color display, and Bluetooth (or other wireless connectivity), besides the larger drive itself.
Now, where is the balancing point of small, easy to carry device vs adding features. If you make the wheel smaller, you can make the screen larger. You could also make it slightly wider, to add room for an antenna and circuitry for bluetooth. You could make the battery slightly larger, this would increase weight.
Now, combine this with the new enclosure rumor (5x7x1) and you could see something like an iPod, but that lets you watch videos.
That is ALMOST a size to consider a slot loading DVD, but then again, maybe not (need to get my hands on a PowerBook G4 to checkout the size of the slotloading DVD drive).
Also consider the new MPEG4/DVD playback chipsets for settop players, and I am sure you could cram that into a small inclosure.
There are cellphones that playback MPEG4 video, so even at the iPod size (or slightly larger), you could possibly playback video.
Of course, there would need to be some application like iTunes is for music, or iPhoto is for pictures. Maybe add those features to iDVD? or add them to iTunes?
Anyway, speculation is alot of fun.
As for this specific guy (Sakoman), I would say he is there for programming interface first, and maybe secondary for mobile applications.
As Apple adds more Unix (Linux) interoperability (like the X11 SDK), this lets some using that OS (Unix/Linux) to move to Mac OSX.
Maybe Apple will do a switcher campaign for those who have moved from Unix flavors to OSX? "I swapped Xs, from linuX to MacOSX".
Just my comments.
Lord Mystery