Something that hasn't been mentioned, but if you plug the charging cable for the watch info the computer and then put your watch on it what happens? I'm guessing you'll be able to see it and put music from the latest itunes update on to it. As well as do firmware updates when the time comes.
If I were Apple I would not create software to sync a Mac to the AW: at least not whilst it needs to be tethered to an iPhone so my guess is that if you connect it to your Mac as you suggest it will just charge.
If and when the AW becomes completely stand alone maybe you will be able to interact with it (wirelessly) through iTunes, but until then I reckon it will be iPhone only.
But what do I know?
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The lack of a 3.5mm jack doesn't help the Watch either for portable music listening.
Looks like the iPod shuffle will have to live a lot longer now.
I agree. Lack of this jack is going to be a drag on sales. As will the lack of at least two USB ports.