Clarification:
I doubt whether Apple will release either a very heavy portable with a huge battery, or a super small, super low power portable. I just don't think it's Apple's style. Apple seems to like having the most powerful laptop processors available in their computers. I mean, you can't get a new Macbook with less than 1.86 Ghz. The speed only goes up to 2.33! I doubt whether Apple will use the ultra low power, low speed CPUs that you would need to run a notebook for 8-10 hours.
I think the far more likely occurrence is to hope that the 7th or 8th gen iPod can function somewhat as a computer. Like much more than the iPhone.
Either that, or hydrogen fuel cells get small and powerful enough to be used in an Apple notebook. (Emphasis on Apple notebook) Or some other technology, such as maybe storing electrons inside of C-60 buckyballs, which I heard somewhere.
Oh, and in terms of transmitting wireless power:
I realise that it can be done. I believe the first person to to it was Mr. Tesla, who obviously is long, long dead. If someone wanted to do it, it could easily be done.
The point is that no-one in the position to do it would want to do it. How do you charge someone for electricity, when they can just rock up, and use it like an unencrypted wireless broadband connection? The only way that this is commercially feasible, is firstly if electricity is at least close enough to free so as to allow say the government to st up a system, and be able to afford to run it.
The second point is electricity needs to be able to be created in huge amounts, as I'm sure you understand, it is hardly efficient to simply broadcast high intensity radiation in every direction.
A third point is that this random broadcasting would cause any pieces of metal to have a voltage induced in them, causing current to flow, which could either electrocute someone, or simply heat the metal up.
The fourth point is that this large amount of radiation could quite easily end up increasing cancer rates by a huge amount.
OK, I think I'm done.
EDIT: OK, I'm not quite done. Along with having fast processors in their notebooks, they also seem to like bright screens, fast RAM, and fast Hard Disks, all which use lots of power.